First I'd like to wish everyone a very happy and prosperous new year!

Here's what I'm trying to do and have done so far.
I need 1 account (user) with a password to access a private album. But I need several people to be able to use this 1 account and leave comments.

I've set up a new group/user (both have the same name) and set the security which seems to be working fine.

Using comments is not going smoothly.
The issue I'm having is only the webmaster/administrator can edit any comments. I've set the option for users to be able to edit their own comments. If I log in under the account I created and try to edit a comment I get this message at the top of the page:

    This login is already used by another user
    Your comment has NOT been registered because it did not pass the validation rules

I can't figure out what to change in all the options to get this to work. Either the edit/delete buttons don't show up or if they do I get that message when I try to edit a comment.

I've set the option in Piwigo (configuration/comments) so the user should be able to edit their comments. Can't figure how to get that working. Something else I need to change?

Also I am only getting an email on the 1st post. Nothing for a comment being edited or deleted.

This is a very restrictive account that I need several people to be able to use. I can get everything to work for administrator or webmaster but not the specific user. It's very important that I get this working.