I can't connect to the Season, because it says I'm not online.
However, I am, and I start the game from Galaxy.
Am I doing something wrong or is it a known issue?
Have not unlocked any achievements either, after about 5 hours of play.
Using Galaxy 1.1.8(beta) , Game Patch 41.535

And the game: I love it :) Wonderful game.

I have similar issue.
Game says my version does not match the server's. Worked fine couple of days ago, I think it started with the 42 update

This is because the server has been updated to the latest version, and at least for steam users, the game has been also. We don't have the latest update for the game on GOG yet. I wish it didn't take as long to update the game, but since this seems to be a very small team and GOG doesn't quite have the best patching system we just have to wait :(.

Yep, as above. They'll work the kinks out with the latest addition of emblems, then it will come here.

Thanks, that explains it :)