Grand Arena Championship Crash and Sign up Issues

Issue: Joined, and was locked in the review screen on first phase. Lost since I couldn't attack. Second and third round worked fine, but given the roster discrepancies between my opponent and I in the first phase, I would've been able to clean sweep his board.

Ally code: 721 453 457

Phone: Galaxy S8, v 9.0 Pie

I signed up for it on announcement. 

I already contacted your help desk and they referred me to your forums after several emails. They confirmed the issue but were otherwise unable to make any changes. 

Ticket 49690334

Thanks for your time.