I also have this problem and can't get out of the screen making me restart the app 

Yes, same here.

I have the same problem too, I can't claim my reward and can't begin new tournament too...

Same problem. I can't claim rewards either. I even uninstalled then reinstalled the game. Nothing works. 

Guys, the problem have been solved. Mech arena officials have apologized for the problem with some reward. 

Dear all! At the time, there was indeed an issue that was promptly handled by the team. We apologize for the inconvenience!

It's ok. It happens.

I AM having the same problam right now, I pushed so hard to rank 1 and now I AM not able to claim the 

This problem is happening to me now

Glad im not the only one with the problem

Hello Floo can you help me out I seem to be getting the same issue these other guys are getting and supposably it was solved i cannot get my tournament rewards or join the new heat until i claim my previous heat rewards. 

The rewards are claim able but even after paying 6tournament matches it's still asking me to register and upon ckicking register it just dives me into another tournament 

I confirm it! The issue was caused by problems on the server we encountered yesterday. Now everything is working fine.