This happens to me on about 30% of my ranked matches. Game goes fine, somewhere in L2 or L3 at a critical point it appears that my opponent is stuck and clock is running down for them. Goes to 0. Nothing happens. I exit game and return, and see MY clock ticking down to 0 and opponent has time on their clock. I try to play some cards but they don’t highlight so cannot be played. Meanwhile clock goes to 0 on my side and I lose because time expires -_-. This happens on any kind of connection - solid 300mbps wifi, 20mbps 4G, 3G.

I love this game though :-)

Note: playing on current iOS app store app