How to reopen a closed project

I closed a project by mistake and cannot find a way to reopen it. How do you reopen a closed project?

You can either delete or archive a project. I never saw an option to “close” one.

For “archive” your project is still there, you just need to switch to “Archived” tab in the UI and then unarchive in settings.
For “delete” it depends if it’s on or self-hosted and what the delete protection is if any.

The group owner sent me an invite to rejoin, and that worked. I’m sure I did not Leave, Archive or Delete, the project. I’m sure I clicked something that said “Close Project?”. I have tried to reproduce the path that lead me to that, but can’t seem to find it.