[SOLVED] PROXMOX 8.4 and 9 crashes during intallation.

Interesting - it should be next to that Unwatch button. Possibly because you are still a New Member or you made some changes to your Account info etc. This has been seen here in the past. I'd ignore it for now.
 
I've now added the SOLVED prefix as requested.

This has happened to people before. It's unclear (to me) why this happens. Maybe "Report" your post yourself with a question about this to get a staff member to take a look?
If I'm not mistaken - this is the result of new(er) users having a shorter timeframe, where they can edit their own posts and threads - and this has simply expired for @toumz in this case.

I hope this helps!