What does this exactly mean? I have an admin account in Wordpress and one in Xenforo with the same username. Is that not supposed to work?You'll have to make sure that your own user account does end up having an administrator role in WordPress. Only the main XenForo user group is taken into account for the usergroup sync.
I get the same error when mapping uaergroups.
Another bug: when a guest tries to comment in native Wordpress comment, a blank page appears:
The comment will be there but it won't appear in mapped Xenforo thread.
Caching will NOT work with popular Wordpress caching solutions like WP Rocket, Cache Enabler or Swift Performance. Those have been around for years and are very established in the Wordpress community as opposed to this plugin.
I guess making sure your plugin is compatible with other popular 3rd party plugins would be a big leap forward.