WSGI needs to be added separately to each subdomain. I notice that ujcis already submit a request to have WSGI added to this new one, which I've just escalated so it'll be handled in the other thread. 🙂
The domain alutagram.helioho.st has been added and may take up to 2 hours to start working.
Not sure if Krydos needs to do anything special with the WSGI stuff as I am not at all familiar with Flask.