Coin master

I’m playing the coin master game and right now there a quest called Viking Quest that I’m trying to play but for some reason it keep kicking me back out to my home screen. The quest is a limited time thing which ends in about 6 hours and I really want to participate because the reward is something that I need to continue playing coin master. I have spent a lot of money playing this game and other than they won’t give u the gold cards you need no matter how many chests you buy over all I have been enjoying the game up until this point. If you can solve this problem for me that would be greatly appreciated thank you. Oh and since I’m writing I guess I can ask why don’t the game give you gold cards that you need the farther you go along. I am pretty far in the game but I’m still missing cards from the beginning. If you can get back with me asap before this quest end would be awesome. Just logged back in and my coins were stolen all because the game keep kicking me out that’s not right.