This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
There are various ways to get support for EXT:gdpr!
A dedicated channel on slack can be be used to get in touch with other users!
The url is: https://typo3.slack.com/messages/ext-gdpr/
If you are not yet registered, use http://forger.typo3.org/slack for that!
If you need a feature which is not yet implemented, feel free to contact me anytime!
If you need private or personal support, ask one of the developers for it.
Be aware that this support might not be free!