I can't connect to my instagram account anymore, on my phone I'm connected to it but everything is black, I can't see any posts, messages, reels etc... even my account seems empty, I have errors like "challenge_required" or "download content impossible". But my account seems normal from the view of the other accounts. My secondary account works fine, but I've tried everything: logging out, emptying the cache, updating, uninstalling, connecting to my PC, but it doesn't work. I can't even connect via the web, and I get this error:

"An error has occurred. An error has occurred and it is impossible to load the Page."

and I have this line

in red in the inspector network with this message "{"message": "useragent mismatch", "status": "fail"}" when the first url is clicked. Please help me