Strange issue with Instagram groups

Hello. I'm going to talk to you here about something that has been happening to me for a few months and that I can't seem to fix, and I find this bug quite surprising as well as strange... In short, I am being added to discussion groups, I see the notification like " <username> added you to the group <group name>". But when I click on it, I only see a black page with a refresh button, with this message: You cannot reply to this conversation.

When I go back to Instagram, I see no trace of this group in my message feed or in my invitations, whether they are hidden or not, and it is impossible for me to search for the name of the person who added me to it, I can't find them. (Anyone can add me to groups, not just my followers). Do you have a solution to this problem? Thank you in advance!