Capabilites only applies to posts created after being added to group

Hi,

Please have a look at https://docs.itthinx.com/document/groups/access-control/posts-and-pages/ where the way posts are protected is described in detail.

What you describe does not sound like something that Groups would do, particularly this:

Any posts created before joining the group cannot be edited

… is not caused by Groups if those posts were not protected. Maybe those posts were protected before the membership of the user changed?

For example, one way to achieve what you describe would be:

1. Assign user U to group G.
2. User U creates post P and protects it using group G.
3. Remove user U from group G.
4. User U cannot access post P.

If that is the case, log in as an administrator who can access all posts, including the restricted ones, and either assign the user back to the group that is required to access the older posts, or reassign those posts to the group that the user belongs to.

If you need further help, please let us know.