Usually I recieve gold reward after playing Quest mode, but after my last game I have received 0 gold.

I played same party as during previous games and played on Legendary difficulty. None of my characters has achieved new level during this game, but I assume that it should not impact gold reward anyway.

This may or may not be the root of your issue encountered. If it's a temporal disconnect to paise/ game centre ( on iPad) as happened to me a few times whenever you arrived at the gold reward screen and see zero gold as a reward, killing the app at that point and restarting the app and going back to quest mode will usually land you back at the screen with the gold reward popping back. At least it had always worked for me.

 

Erring on side of caution however, whichever device you play on, each time you kill the app midway best backup a copy of the local save file just in case data gets corrupted . However each time I did that above on my iPad I continued my progress with no glitch. I'd had my save corrupted once though leaving game midway on.

Rhygar, thanks for the idea. I will try the proposed workaround next time when I encounter this issue.

 

But I have never had any disconnect issues before, so I'm not sure that it is really the root of the problem.

Everytime you lose Connection to game Center (or google play), you don't get rewards...

Guite normal and not so fun problem...

There's no notice of disconnect from paiso/ gamecenter for me either when I don't see the customary gold reward but it happens to me. Hopefully it could help with your case too