Check your language settings. Usually that means you have the language that the comments are tagged with disabled. (Usually either English or Uncategorized is disabled)

Do you agree with this?

Yes, at least for hobby use. If it really needs something more complex than SQLite and an embedded HTTP server, it’s probably going to turn into a second job to keep it working properly.

I just download the offline installers from GOG and keep those on my NAS organized into folders per game until I want to install them. Not fancy, but it works fine for me.

You might consider using Google Takeout to export the emails to an mbox file, and then importing that into your new mail server.

Did you flip a power switch on the PSU at some point, perhaps? (Done that one a few times myself…)

I have a few of those, and while the ones I bought have worked out fine so far, I think it’s worth cautioning people that they are annoyingly loud doing basic operations.