Our WordPress plugin tries to stay out of the way of the rest of how WordPress works. You register and login through our login form then, after that, the rest is handled by core WordPress functions and hooks. We have not tested it specifically with Restrict Content Pro but I don’t see why it wouldn’t play along nicely. If it doesn’t, we’re happy to work with you to get support in there, either through additional hooks or adhering to any core processes we missed.
As for custom fields, I assume you mean fields on the registration form? Like @kimcodes mentioned, you can add metadata fields to the signup form using JSON (more information here) and that will save to Auth0 as
user_metadata. Back in WordPress, that can be accessed using the
One of the big improvements we’re planning now is better syncing between Auth0 and WordPress (including signup fields) but that’s a few releases away.
Hope that helps!