1. Quick Javasctipt (JS) API

Connect your user base using the RumbleTalk chat room Login SDK.
This is easy but will requiere some technical knowledge.

https://www.rumbletalk.com/support/API_Auto_Login/

Note, if you are using a WordPress plugin, we did the heavy lifting for you, so integration of your users base to WordPress is automatically done with the RumbleTalk WordPress plugin.