Is codea community still maintained?

I tried to access codea community, but get an error message ‘request failed (406)’. I have not used it for a while, is it still working since the codea update? I hope so as i was using it to backup my projects.

I don’t think anyone is actively maintaining it, no. The two main people were toffer (who is fairly inactive) and Briarfox (who hasn’t been active for over a year). You could ask toffer nicely to look at it, perhaps, but I suggest you first look at it to make sure it’s not something simple.