Error message

Hi! Anyone know what could be causing this error message? I can't play for 2 days now, it throws an error on my tablet and also on my PC. Also, it keeps showing a completed deck as incomplete, when I enter the deck it's 30/30.

Hi! Anyone know what could be causing this error message? I can't play for 2 days now, it throws an error on my tablet and also on my PC. Also, it keeps showing a completed deck as incomplete, when I enter the deck it's 30/30.