I still cannot solve the problem, CasaOS says “Unable to update at the moment!” (in the devtool > Network the response is status 500 and {“message”:“compose app not match”}).
I suppose that CasaOS downloads the wrong compose (without the “v” in the image tag) and for some reason is stuck with the error… I tried restarting, didn’t works.
There’s a less risky way than “unstalling & reinstalling” stuff? Maybe update manually the wrong info that CasaOS uses or something.