diff --git a/.github/workflows/LetsEncrypt.yml b/.github/workflows/LetsEncrypt.yml
index bdc9072e..84fe61ad 100644
--- a/.github/workflows/LetsEncrypt.yml
+++ b/.github/workflows/LetsEncrypt.yml
@@ -16,34 +16,89 @@ on:
 
 jobs:
   Ubuntu:
+    strategy:
+      matrix:
+        include:
+         - TEST_ACME_Server: ""
+           CA_ECDSA: ""
+           CA: ""
+           CA_EMAIL: ""
+         - TEST_ACME_Server: "https://acme.zerossl.com/v2/DV90"
+           CA_ECDSA: "ZeroSSL ECC Domain Secure Site CA"
+           CA: "ZeroSSL RSA Domain Secure Site CA"
+           CA_EMAIL: "githubtest@acme.sh"
     runs-on: ubuntu-latest
     env:
       TEST_LOCAL: 1
+      ACME_DIRECTORY: ${{ matrix.TEST_ACME_Server }}
+      CA_ECDSA: ${{ matrix.CA_ECDSA }}
+      CA: ${{ matrix.CA }}
+      CA_EMAIL: ${{ matrix.CA_EMAIL }}
     steps:
     - uses: actions/checkout@v2
     - name: Install tools
       run: sudo apt-get install -y socat
     - name: Clone acmetest
-      run: cd .. && git clone https://github.com/acmesh-official/acmetest.git  && cp -r acme.sh acmetest/
+      run: |
+          cd .. \
+          && git clone https://github.com/acmesh-official/acmetest.git \
+          && cp -r acme.sh acmetest/
     - name: Run acmetest
-      run: cd ../acmetest && sudo --preserve-env ./letest.sh
+      run: |
+          cd ../acmetest \
+          && sudo --preserve-env ./letest.sh
 
   MacOS:
+    strategy:
+      matrix:
+        include:
+         - TEST_ACME_Server: ""
+           CA_ECDSA: ""
+           CA: ""
+           CA_EMAIL: ""
+         - TEST_ACME_Server: "https://acme.zerossl.com/v2/DV90"
+           CA_ECDSA: "ZeroSSL ECC Domain Secure Site CA"
+           CA: "ZeroSSL RSA Domain Secure Site CA"
+           CA_EMAIL: "githubtest@acme.sh"
     runs-on: macos-latest
     env:
       TEST_LOCAL: 1
+      ACME_DIRECTORY: ${{ matrix.TEST_ACME_Server }}
+      CA_ECDSA: ${{ matrix.CA_ECDSA }}
+      CA: ${{ matrix.CA }}
+      CA_EMAIL: ${{ matrix.CA_EMAIL }}
     steps:
     - uses: actions/checkout@v2
     - name: Install tools
       run:  brew install socat
     - name: Clone acmetest
-      run: cd .. && git clone https://github.com/acmesh-official/acmetest.git  && cp -r acme.sh acmetest/
+      run: |
+          cd .. \
+          && git clone https://github.com/acmesh-official/acmetest.git \
+          && cp -r acme.sh acmetest/
     - name: Run acmetest
-      run: cd ../acmetest && sudo --preserve-env ./letest.sh
+      run: |
+          cd ../acmetest \
+          && sudo --preserve-env ./letest.sh
 
   Windows:
+    strategy:
+      matrix:
+        include:
+         - TEST_ACME_Server: ""
+           CA_ECDSA: ""
+           CA: ""
+           CA_EMAIL: ""
+         - TEST_ACME_Server: "https://acme.zerossl.com/v2/DV90"
+           CA_ECDSA: "ZeroSSL ECC Domain Secure Site CA"
+           CA: "ZeroSSL RSA Domain Secure Site CA"
+           CA_EMAIL: "githubtest@acme.sh"
     runs-on: windows-latest
     env:
+      ACME_DIRECTORY: ${{ matrix.TEST_ACME_Server }}
+      CA_ECDSA: ${{ matrix.CA_ECDSA }}
+      CA: ${{ matrix.CA }}
+      CA_EMAIL: ${{ matrix.CA_EMAIL }}
       TEST_LOCAL: 1
       #The 80 port is used by Windows server, we have to use a custom port, tunnel will also use this port.
       Le_HTTPPort: 8888
@@ -77,9 +132,24 @@ jobs:
       run: cd ../acmetest && bash.exe -c ./letest.sh
 
   FreeBSD:
+    strategy:
+      matrix:
+        include:
+         - TEST_ACME_Server: ""
+           CA_ECDSA: ""
+           CA: ""
+           CA_EMAIL: ""
+         - TEST_ACME_Server: "https://acme.zerossl.com/v2/DV90"
+           CA_ECDSA: "ZeroSSL ECC Domain Secure Site CA"
+           CA: "ZeroSSL RSA Domain Secure Site CA"
+           CA_EMAIL: "githubtest@acme.sh"
     runs-on: macos-latest
     env:
       TEST_LOCAL: 1
+      ACME_DIRECTORY: ${{ matrix.TEST_ACME_Server }}
+      CA_ECDSA: ${{ matrix.CA_ECDSA }}
+      CA: ${{ matrix.CA }}
+      CA_EMAIL: ${{ matrix.CA_EMAIL }}
     steps:
     - uses: actions/checkout@v2
     - uses: vmactions/cf-tunnel@v0.0.2
@@ -93,18 +163,34 @@ jobs:
       run: cd .. && git clone https://github.com/acmesh-official/acmetest.git  && cp -r acme.sh acmetest/
     - uses: vmactions/freebsd-vm@v0.1.4
       with:
-        envs: 'TEST_LOCAL TestingDomain'
+        envs: 'TEST_LOCAL TestingDomain ACME_DIRECTORY CA_ECDSA CA CA_EMAIL'
         nat: |
           "8080": "80"
         prepare: pkg install -y socat curl
         usesh: true
         run: |
-          cd ../acmetest && ./letest.sh
+          cd ../acmetest \
+          && ./letest.sh
 
   Solaris:
+    strategy:
+      matrix:
+        include:
+         - TEST_ACME_Server: ""
+           CA_ECDSA: ""
+           CA: ""
+           CA_EMAIL: ""
+         - TEST_ACME_Server: "https://acme.zerossl.com/v2/DV90"
+           CA_ECDSA: "ZeroSSL ECC Domain Secure Site CA"
+           CA: "ZeroSSL RSA Domain Secure Site CA"
+           CA_EMAIL: "githubtest@acme.sh"
     runs-on: macos-latest
     env:
       TEST_LOCAL: 1
+      ACME_DIRECTORY: ${{ matrix.TEST_ACME_Server }}
+      CA_ECDSA: ${{ matrix.CA_ECDSA }}
+      CA: ${{ matrix.CA }}
+      CA_EMAIL: ${{ matrix.CA_EMAIL }}
     steps:
     - uses: actions/checkout@v2
     - uses: vmactions/cf-tunnel@v0.0.2
@@ -118,10 +204,11 @@ jobs:
       run: cd .. && git clone https://github.com/acmesh-official/acmetest.git  && cp -r acme.sh acmetest/
     - uses: vmactions/solaris-vm@v0.0.3
       with:
-        envs: 'TEST_LOCAL TestingDomain'
+        envs: 'TEST_LOCAL TestingDomain ACME_DIRECTORY CA_ECDSA CA CA_EMAIL'
         nat: |
           "8080": "80"
         prepare: pkgutil -y -i socat curl
         run: |
-          cd ../acmetest && ./letest.sh
+          cd ../acmetest \
+          && ./letest.sh
 
diff --git a/acme.sh b/acme.sh
index 47eb5a9a..0b2eb9e6 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
-VER=2.9.0
+VER=3.0.0
 
 PROJECT_NAME="acme.sh"
 
@@ -29,7 +29,7 @@ CA_BUYPASS_TEST="https://api.test4.buypass.no/acme/directory"
 CA_ZEROSSL="https://acme.zerossl.com/v2/DV90"
 _ZERO_EAB_ENDPOINT="http://api.zerossl.com/acme/eab-credentials-email"
 
-DEFAULT_CA=$CA_LETSENCRYPT_V2
+DEFAULT_CA=$CA_ZEROSSL
 DEFAULT_STAGING_CA=$CA_LETSENCRYPT_V2_TEST
 
 CA_NAMES="
@@ -3056,7 +3056,7 @@ _checkConf() {
       _debug "Try include files"
       for included in $(cat "$2" | tr "\t" " " | grep "^ *include *.*;" | sed "s/include //" | tr -d " ;"); do
         _debug "check included $included"
-        if !_startswith "$included" "/" && _exists dirname; then
+        if ! _startswith "$included" "/" && _exists dirname; then
           _relpath="$(dirname "$_c_file")"
           _debug "_relpath" "$_relpath"
           included="$_relpath/included"
@@ -3526,8 +3526,10 @@ _regAccount() {
     if [ -z "$_eab_id" ] || [ -z "$_eab_hmac_key" ]; then
       _info "No EAB credentials found for ZeroSSL, let's get one"
       if [ -z "$_email" ]; then
-        _err "Please provide a email address for ZeroSSL account."
-        _err "See ZeroSSL usage: $_ZEROSSL_WIKI"
+        _info "$(__green "$PROJECT_NAME is using ZeroSSL as default CA now.")"
+        _info "$(__green "Please update your account with an email address first.")"
+        _info "$(__green "$PROJECT_ENTRY --register-account -m my@example.com")"
+        _info "See: $(__green "$_ZEROSSL_WIKI")"
         return 1
       fi
       _eabresp=$(_post "email=$_email" $_ZERO_EAB_ENDPOINT)
@@ -3538,11 +3540,13 @@ _regAccount() {
       fi
       _debug2 "$_eabresp"
       _eab_id="$(echo "$_eabresp" | tr ',}' '\n' | grep '"eab_kid"' | cut -d : -f 2 | tr -d '"')"
+      _secure_debug2 _eab_id "$_eab_id"
       if [ -z "$_eab_id" ]; then
         _err "Can not resolve _eab_id"
         return 1
       fi
       _eab_hmac_key="$(echo "$_eabresp" | tr ',}' '\n' | grep '"eab_hmac_key"' | cut -d : -f 2 | tr -d '"')"
+      _secure_debug2 _eab_hmac_key "$_eab_hmac_key"
       if [ -z "$_eab_hmac_key" ]; then
         _err "Can not resolve _eab_hmac_key"
         return 1
@@ -3564,7 +3568,7 @@ _regAccount() {
     eab_sign_t="$eab_protected64.$eab_payload64"
     _debug3 eab_sign_t "$eab_sign_t"
 
-    key_hex="$(_durl_replace_base64 "$_eab_hmac_key" | _dbase64 | _hex_dump | tr -d ' ')"
+    key_hex="$(_durl_replace_base64 "$_eab_hmac_key" | _dbase64 multi | _hex_dump | tr -d ' ')"
     _debug3 key_hex "$key_hex"
 
     eab_signature=$(printf "%s" "$eab_sign_t" | _hmac sha256 $key_hex | _base64 | _url_replace)
diff --git a/dnsapi/dns_1984hosting.sh b/dnsapi/dns_1984hosting.sh
index f371f2c1..8fa6e06e 100755
--- a/dnsapi/dns_1984hosting.sh
+++ b/dnsapi/dns_1984hosting.sh
@@ -59,7 +59,7 @@ dns_1984hosting_add() {
   if _contains "$response" '"haserrors": true'; then
     _err "1984Hosting failed to add TXT record for $_sub_domain bad RC from _post"
     return 1
-  elif _contains "$response" "<html>"; then
+  elif _contains "$response" "html>"; then
     _err "1984Hosting failed to add TXT record for $_sub_domain. Check $HTTP_HEADER file"
     return 1
   elif _contains "$response" '"auth": false'; then
@@ -204,7 +204,7 @@ _get_root() {
     fi
 
     _authget "https://management.1984hosting.com/domains/soacheck/?zone=$h&nameserver=ns0.1984.is."
-    if _contains "$_response" "serial" && ! _contains "$_response" 'null}'; then
+    if _contains "$_response" "serial" && ! _contains "$_response" "null"; then
       _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
       _domain="$h"
       return 0
diff --git a/dnsapi/dns_vultr.sh b/dnsapi/dns_vultr.sh
index c7b52e84..84857966 100644
--- a/dnsapi/dns_vultr.sh
+++ b/dnsapi/dns_vultr.sh
@@ -33,7 +33,7 @@ dns_vultr_add() {
   _debug 'Getting txt records'
   _vultr_rest GET "dns/records?domain=$_domain"
 
-  if printf "%s\n" "$response" | grep "\"type\":\"TXT\",\"name\":\"$fulldomain\"" >/dev/null; then
+  if printf "%s\n" "$response" | grep -- "\"type\":\"TXT\",\"name\":\"$fulldomain\"" >/dev/null; then
     _err 'Error'
     return 1
   fi
@@ -73,12 +73,12 @@ dns_vultr_rm() {
   _debug 'Getting txt records'
   _vultr_rest GET "dns/records?domain=$_domain"
 
-  if printf "%s\n" "$response" | grep "\"type\":\"TXT\",\"name\":\"$fulldomain\"" >/dev/null; then
+  if printf "%s\n" "$response" | grep -- "\"type\":\"TXT\",\"name\":\"$fulldomain\"" >/dev/null; then
     _err 'Error'
     return 1
   fi
 
-  _record_id="$(echo "$response" | tr '{}' '\n' | grep '"TXT"' | grep "$txtvalue" | tr ',' '\n' | grep -i 'RECORDID' | cut -d : -f 2)"
+  _record_id="$(echo "$response" | tr '{}' '\n' | grep '"TXT"' | grep -- "$txtvalue" | tr ',' '\n' | grep -i 'RECORDID' | cut -d : -f 2)"
   _debug _record_id "$_record_id"
   if [ "$_record_id" ]; then
     _info "Successfully retrieved the record id for ACME challenge."