diff --git a/.idea/namesilo-letsencrypt.iml b/.idea/namesilo-letsencrypt.iml
index 01981e5..ddc01a4 100644
--- a/.idea/namesilo-letsencrypt.iml
+++ b/.idea/namesilo-letsencrypt.iml
@@ -7,7 +7,7 @@
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="jdk" jdkName="Python 3.8" jdkType="Python SDK" />
+    <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..0a79563
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,25 @@
+# Changelog
+
+## [0.9.2](https://github.com/ethauvin/namesilo-letsencrypt/tree/0.9.2) (2020-05-28)
+
+[Full Changelog](https://github.com/ethauvin/namesilo-letsencrypt/compare/0.9.1...0.9.2)
+
+**Closed issues:**
+
+- Do not support multiple \_acme-challenge records [\#1](https://github.com/ethauvin/namesilo-letsencrypt/issues/1)
+
+**Merged pull requests:**
+
+- make python3.4 compatible. add subdomains support [\#2](https://github.com/ethauvin/namesilo-letsencrypt/pull/2) ([Junker](https://github.com/Junker))
+
+## [0.9.1](https://github.com/ethauvin/namesilo-letsencrypt/tree/0.9.1) (2020-03-15)
+
+[Full Changelog](https://github.com/ethauvin/namesilo-letsencrypt/compare/0.9.0...0.9.1)
+
+## [0.9.0](https://github.com/ethauvin/namesilo-letsencrypt/tree/0.9.0) (2019-04-30)
+
+[Full Changelog](https://github.com/ethauvin/namesilo-letsencrypt/compare/8a91146faebd196b223f7653e470428130f26246...0.9.0)
+
+
+
+\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*
diff --git a/README.md b/README.md
index 79ab273..3e2232a 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # NameSilo Let's Encrypt
 
-[![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](http://opensource.org/licenses/BSD-3-Clause)
-[![Python 3.8](https://img.shields.io/badge/python-3.8-blue.svg)](https://www.python.org/)
+[![License (3-Clause BSD)](https://img.shields.io/badge/license-BSD%203--Clause-blue.svg?style=flat-square)](https://opensource.org/licenses/BSD-3-Clause)
+[![Python 3.4](https://img.shields.io/badge/python-3.4-blue.svg)](https://www.python.org/)
 
 Python scripts (hook) to automate obtaining [Let's Encrypt](https://letsencrypt.org/) certificates,
 using [Certbot](https://certbot.eff.org/) DNS-01 challenge validation for domains DNS hosted on
@@ -9,22 +9,21 @@ using [Certbot](https://certbot.eff.org/) DNS-01 challenge validation for domain
 
 ## Setup
 
-The scripts use the [untangle](https://untangle.readthedocs.io/en/latest/) library, if not already installed on your system:
+The scripts use the [tldextract](https://github.com/john-kurkowski/tldextract) and [untangle](https://untangle.readthedocs.io/en/latest/) libraries, if not already installed on your system:
 
 ```
-pip install untangle
+pip install tldextract untangle
 ```
 
 Download the [latest release](https://github.com/ethauvin/namesilo-letsencrypt/releases) archive and expand it in the desired directory.
 
-
 ## Configuration
 
-Add your [NameSilo API key](https://www.namesilo.com/account_api.php)
+Add your [NameSilo API key](https://www.namesilo.com/account/api-manager)
 to the top of the `config.py` file:
 
 ```python
-# Get your API Key from: https://www.namesilo.com/account_api.php
+# Get your API Key from: https://www.namesilo.com/account/api-manager
 apikey = "YOUR_API_KEY"
 ```
 
@@ -43,4 +42,4 @@ certbot certonly --manual --email you@example.com \
 -d *.example.com -d example.com
 </pre>
 
-Please note that NameSilo DNS propagation takes up to **15 minutes**. The scripts will wait **20 minutes** before completing, just to be safe.
+Please note that NameSilo DNS propagation takes up to **15 minutes**. The scripts will wait **25 minutes** before completing, just to be safe.
diff --git a/authenticator.py b/authenticator.py
old mode 100644
new mode 100755
index c6fb9bd..510aa1f
--- a/authenticator.py
+++ b/authenticator.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
 
 #  authenticator.py
 #
@@ -37,6 +37,7 @@ import tempfile
 import time
 import urllib.request
 
+import tldextract
 import untangle
 
 from config import apikey, wait
@@ -45,28 +46,32 @@ from config import apikey, wait
 def sleep(minutes):
     if minutes < 16:
         minutes = 16
-    print("Waiting", minutes, "minutes for DNS changes to complete...")
     time.sleep(minutes * 60)
 
 
 domain = os.environ['CERTBOT_DOMAIN']
 validation = os.environ['CERTBOT_VALIDATION']
-tmpdir = os.path.join(tempfile.gettempdir(), f"CERTBOT_{domain}")
+tmpdir = os.path.join(tempfile.gettempdir(), "CERTBOT_" + domain)
+rrhost = "_acme-challenge"
 
 if "NAMESILO_API" in os.environ:
     apikey = os.environ['NAMESILO_API']
 
-url = f"https://www.namesilo.com/api/dnsAddRecord?\
-version=1&type=xml&key={apikey}&domain={domain}&rrtype=TXT\
-&rrhost=_acme-challenge&rrvalue={validation}&rrttl=3600"
+tld = tldextract.extract(domain)
+nsdomain = tld.domain + "." + tld.suffix
+if tld.subdomain:
+    rrhost += "." + tld.subdomain
+
+url = "https://www.namesilo.com/api/dnsAddRecord?\
+version=1&type=xml&key=" + apikey + "&domain=" + nsdomain + "&rrtype=TXT\
+&rrhost=" + rrhost + "&rrvalue=" + validation + "&rrttl=3600"
 
 req = urllib.request.Request(
     url,
     data=None,
     headers={
-        'User-Agent': ('Mozilla/5.0 (X11; CrOS x86_64 11647.154.0) '
-                       'AppleWebKit/537.36 (KHTML, like Gecko) '
-                       'Chrome/73.0.3683.114 Safari/537.36')
+        'User-Agent': ('Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) '
+                       'Gecko/20100101 Firefox/74.0')
     }
 )
 
diff --git a/cleanup.py b/cleanup.py
old mode 100644
new mode 100755
index 627560a..c15d05c
--- a/cleanup.py
+++ b/cleanup.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.8
+#!/usr/bin/env python3
 
 #  cleanup.py
 #
@@ -36,18 +36,22 @@ import sys
 import tempfile
 import urllib.request
 
+import tldextract
 import untangle
 
 from config import apikey
 
 domain = os.environ['CERTBOT_DOMAIN']
-tmpdir = os.path.join(tempfile.gettempdir(), f"CERTBOT_{domain}")
+tmpdir = os.path.join(tempfile.gettempdir(), "CERTBOT_" + domain)
 
 if "NAMESILO_API" in os.environ:
     apikey = os.environ['NAMESILO_API']
 
-url = f"https://www.namesilo.com/api/dnsDeleteRecord\
-?version=1&type=xml&key={apikey}&domain={domain}&rrid="
+tld = tldextract.extract(domain)
+nsdomain = tld.domain + "." + tld.suffix
+
+url = "https://www.namesilo.com/api/dnsDeleteRecord\
+?version=1&type=xml&key=" + apikey + "&domain=" + nsdomain + "&rrid="
 
 
 def getrequest(record_id):
@@ -55,9 +59,8 @@ def getrequest(record_id):
         url + record_id,
         data=None,
         headers={
-            'User-Agent': ('Mozilla/5.0 (X11; CrOS x86_64 11647.154.0) '
-                           'AppleWebKit/537.36 (KHTML, like Gecko) '
-                           'Chrome/73.0.3683.114 Safari/537.36')
+            'User-Agent': ('Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) '
+                           'Gecko/20100101 Firefox/74.0')
         }
     )
 
diff --git a/config.py b/config.py
index 8679450..0bcd226 100644
--- a/config.py
+++ b/config.py
@@ -1,4 +1,4 @@
-# Get your API Key from: https://www.namesilo.com/account_api.php
+# Get your API Key from: https://www.namesilo.com/account/api-manager
 apikey = "YOUR_API_KEY"
 # Minutes to wait for DNS changes to complete.
-wait = 20
+wait = 25
diff --git a/release.sh b/release.sh
new file mode 100755
index 0000000..6689a1b
--- /dev/null
+++ b/release.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+RELEASE=release
+
+if [ $# != 1 ];
+then
+	echo "Usage: $(basename "$0") <version>"
+	exit 2
+else
+    if ! [ -d "$RELEASE" ]
+    then
+        mkdir "$RELEASE"
+    fi
+    PROJECT=$(basename "$(pwd)")
+    DIR="${PROJECT}-${1}"
+    mkdir "$DIR"
+    cp ./*.py ./*.md ./*.txt "$DIR"
+    dos2unix "$DIR"/*.*
+    touch "$DIR" "$DIR"/*.*
+    tar -czvf "${RELEASE}/${DIR}.tar.gz" "$DIR"
+    zip --to-crlf -r "${RELEASE}/${DIR}.zip" "$DIR"
+    touch "$RELEASE"/*.*
+    rm -rf "${DIR}"
+fi
diff --git a/release/namesilo-letsencrypt-0.9.2.tar.gz b/release/namesilo-letsencrypt-0.9.2.tar.gz
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index 0000000..4affb98
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