Ran the game, windows firewall asked me to allow it, I said no.

No problem as I want to play offline, game proceeded.

Started the tutorial.
At the combat phase tutorial phase I clicked on replay as I was not satisfied with my understanding of how combat works.

The game kept giving me error not being able to connect to servers and was stuck in a loop with that.

FOR THE FREAKING TUTORIAL.

So, is this a bug with the tutorial, or the rest of the game will also have this problem for single player?