For anyone trying to get a handle on publishing members-only or premium-only content in GRAV, I found this resource - opens in new tab/window - to be helpful/concise/accurate. Incorporating this content into the formal GRAV Groups and Permissions - opens in new tab/window - documentation would be of benefit.
Tangentially, I would love to see someone post a twig or PHP snippet (or a link to a pre-built plugin) capable of iterating over all the *.yaml files in the users/accounts directory to make wholesale edits to the groups list, for example to remove the - paid group from a member who has failed to renew his/her membership, so that - meeting some expiry criterion - each...
groups:
- registered
- paid
... becomes ...
groups:
- registered
Finally, is there a GRAV "Register Now" plugin (or option) that can piggyback on the login plugin?