MarkoH01: the sheer amount of tickets they NEVER resolved even after years. In most cases we are talking about game related questions which they "forwarded" (aka send to nirvana) to product team but we are also talking about some Galaxy issues and the aforementioned web issues.
Exactly my experience.
The worst support ticket was one of my early ones, that dragged on for about 6½ months. In the end, I'd sent multiple replies, which were all ignored. Eventually the ticket was closed due to inactivity. The problem was that cloud saves in GOG Galaxy would work initially, but stopped working with a misleading "Heavy server load" error or some such after a day or so. This happened for all games. I've given up on cloud saves since, but a forum user seems to have discovered this apparently happens when
the LSASS.exe Windows service doesn't have Internet access.
Another problem I had at the time was no achievements unlocking in any game. After a lot of pointless back and forth, I discovered on my own the game executable itself needs Internet access, not just the GOG Galaxy executables.
In a halfway functioning store, community solutions like these would've been added to a
support article, but not here.
I tried reporting a GOG Galaxy regression: you can no longer download extras by clicking anywhere on the entire row. I pointed out how the row still highlights on hover and changes color on click, but nothing happens. I pointed out multiple threads about people confused about this, thinking extras can't be downloaded (you have to click the little arrow to the right). The support agent said he can't say if the behavior will be reverted, but my report will be passed on. That was in mid-April.
I think I'll stop the list here, as this post is lengthy enough already. After
the latest exercise in futility, I need to learn not to bother anymore. This place feels abandoned on every level. Everything from parts of the site that remain broken for years, to community moderators that don't respond to chat messages, to spam that doesn't get deleted and simply gets pushed off page 1 by other threads.