What just happened.

After finishing the game, I was watching videos on Playo. While I was using the EXP bonus gem, after returning to the screen, nothing happened. Suddenly, the screen returned to the login screen, and I experienced a phenomenon where I had to log in again. I tried logging in multiple times but got errors, so it was hard to get in. After clearing the cache and force stopping, then trying again, I finally managed to log in... I have no idea what happened. ╮(╯-╰")╭I don't know...