When Every Second Counts!

It gets progressively heavier when I'm merging, and during a battle event, it froze. Right when I was close to finishing, the screen showed 'Maybe it's a little off' and returned me to the title screen. I wish it wouldn't do that. It happens when I'm so close, and it makes me lose to my opponent (　；∀；). Maybe I tap too much when I'm flustered? ... But it always happens at the worst possible moment, which is so frustrating ٩(๑`^´๑)۶