Suddenly

My progress got reset and I freaked out, but thankfully I was able to recover it by logging in with my linked Google account ㅠㅠ I don't know why, but it seems like being logged out was the problem ㅜ I didn't touch anything and was just playing the game, so I don't know why it logged me out, but it really made me realize how important it is to link your account before playing...