The 1st quest" cast 10 fire spells"does not work. I tried “wall of fire” and “fire ball”, but the counter is still 0/10.
What mode are you doing this in?
I tried casual, rating (classic, wild and standard) on MacOS and iOS. So i’ve tried everything and it doesn’t work everywhere. 
You did not concede early right
Nope, i’m fighting to the end.
I’m doing everything right, but the quest doesn’t count. Most likely, this is some kind of technical problem.
Literally a minute ago, I won a fight in the classic format, using a fireball.
sounds like a technical bug then
I don’t think Classic works, because spell schools weren’t a thing yet back then.
Jzz, man! I thought that i tried to play in standard, but no. Tyvm! It’s worked only in standart.