Maybe I should open a new topic for this but I'm having members experience a strange issue when trying to Add a friend or send a private message.
I thought it was theme related but if it was, I don't think the "Protected Page" would be attempting to show up since they are unrelated.
In my membership levels I do NOT have Private Messaging added to the negative rules for the membership level this member is assigned. And, as far as I know, there aren't any settings to turn off the ability to add friends so not sure why any members would see this issue.
As an admin, I haven't had the problem once but have been able to replicate with other non-admin accounts