diff --git a/index.md b/index.md
index e7b747b..f8fea60 100644
--- a/index.md
+++ b/index.md
@@ -10,22 +10,15 @@ Setup [certbot](https://certbot.eff.org/) Let's Encrypt client.
 * [Default Variables](#default-variables)
   * [certbot_command_arguments](#certbot-command-arguments)
   * [certbot_config_dir](#certbot-config-dir)
-  * [certbot_core_networks_api_host](#certbot-core-networks-api-host)
-  * [certbot_core_networks_api_password](#certbot-core-networks-api-password)
-  * [certbot_core_networks_api_user](#certbot-core-networks-api-user)
-  * [certbot_core_networks_base_dir](#certbot-core-networks-base-dir)
-  * [certbot_core_networks_dns_zone](#certbot-core-networks-dns-zone)
-  * [certbot_core_networks_log_level](#certbot-core-networks-log-level)
-  * [certbot_core_networks_plugin_enabled](#certbot-core-networks-plugin-enabled)
-  * [certbot_core_networks_plugin_repo](#certbot-core-networks-plugin-repo)
-  * [certbot_core_networks_plugin_version](#certbot-core-networks-plugin-version)
+  * [certbot_credentials](#certbot-credentials)
+  * [certbot_cron_file](#certbot-cron-file)
+  * [certbot_cron_hour](#certbot-cron-hour)
+  * [certbot_cron_minute](#certbot-cron-minute)
   * [certbot_domains](#certbot-domains)
   * [certbot_email](#certbot-email)
-  * [certbot_environment](#certbot-environment)
   * [certbot_initial_run_enabled](#certbot-initial-run-enabled)
   * [certbot_log_dir](#certbot-log-dir)
   * [certbot_packages_extra](#certbot-packages-extra)
-  * [certbot_plugin_dir](#certbot-plugin-dir)
   * [certbot_preferred_challenges](#certbot-preferred-challenges)
   * [certbot_rsa_key_size](#certbot-rsa-key-size)
   * [certbot_scheduler_enabled](#certbot-scheduler-enabled)
@@ -45,13 +38,7 @@ Setup [certbot](https://certbot.eff.org/) Let's Encrypt client.
 ```YAML
 certbot_command_arguments:
   - certonly
-  - --agree-tos
-  - --manual
-  - --manual-auth-hook /path/to/authenticator.py
-  - --manual-cleanup-hook /path/to/cleanup.py
-  - --manual-public-ip-logging-ok
-  - -n
-  - -d {{ certbot_domains | join(',') }}
+  - -n -d {{ certbot_domains | join(',') }}
 ```
 
 ### certbot_config_dir
@@ -62,76 +49,46 @@ certbot_command_arguments:
 certbot_config_dir: /etc/letsencrypt
 ```
 
-### certbot_core_networks_api_host
+### certbot_credentials
+
+Specify key value parairs for your credentials (e.g. plugin credentials). The credentials will be saved to `{{ certbot_config_dir }}/credentials.ini and you could add the path to `certbot_command_arguments` if required.
 
 #### Default value
 
 ```YAML
-certbot_core_networks_api_host: https://beta.api.core-networks.de/
+certbot_credentials: []
 ```
 
-### certbot_core_networks_api_password
+### certbot_cron_file
+
+Use a file under /etc/cron.d but this will only work if `certbot_user`
 
 #### Default value
 
 ```YAML
-certbot_core_networks_api_password: secure
+certbot_cron_file: _unset_
 ```
 
-### certbot_core_networks_api_user
-
-#### Default value
+#### Example usage
 
 ```YAML
-certbot_core_networks_api_user: myuser
+certbot-letsencrypt
 ```
 
-### certbot_core_networks_base_dir
+### certbot_cron_hour
 
 #### Default value
 
 ```YAML
-certbot_core_networks_base_dir: '{{ certbot_plugin_dir }}/certbot_dns_corenetworks'
+certbot_cron_hour: 3
 ```
 
-### certbot_core_networks_dns_zone
+### certbot_cron_minute
 
 #### Default value
 
 ```YAML
-certbot_core_networks_dns_zone: mydomain.com
-```
-
-### certbot_core_networks_log_level
-
-#### Default value
-
-```YAML
-certbot_core_networks_log_level: error
-```
-
-### certbot_core_networks_plugin_enabled
-
-#### Default value
-
-```YAML
-certbot_core_networks_plugin_enabled: false
-```
-
-### certbot_core_networks_plugin_repo
-
-#### Default value
-
-```YAML
-certbot_core_networks_plugin_repo: https://git.rknet.org/xoxys/certbot_dns_corenetworks.git
-```
-
-### certbot_core_networks_plugin_version
-
-#### Default value
-
-```YAML
-certbot_core_networks_plugin_version: master
+certbot_cron_minute: 30
 ```
 
 ### certbot_domains
@@ -151,22 +108,6 @@ certbot_domains:
 certbot_email: mail@example.com
 ```
 
-### certbot_environment
-
-#### Default value
-
-```YAML
-certbot_environment:
-  - name: '{{ certbot_work_dir }}'
-    mode: '0755'
-  - name: '{{ certbot_config_dir }}'
-    mode: '0755'
-  - name: '{{ certbot_log_dir }}'
-    mode: '0700'
-  - name: '{{ certbot_plugin_dir }}'
-    mode: '0755'
-```
-
 ### certbot_initial_run_enabled
 
 #### Default value
@@ -191,14 +132,6 @@ certbot_log_dir: /var/log/letsencrypt
 certbot_packages_extra: []
 ```
 
-### certbot_plugin_dir
-
-#### Default value
-
-```YAML
-certbot_plugin_dir: /etc/letsencrypt/plugins
-```
-
 ### certbot_preferred_challenges
 
 #### Default value
@@ -217,6 +150,8 @@ certbot_rsa_key_size: 4096
 
 ### certbot_scheduler_enabled
 
+Enable scheduling via cron.
+
 #### Default value
 
 ```YAML