I suddenly get kicked out of my account

Before getting kicked out, I had finished a H2H game and waiting for the scoreboard, but during the waiting time, I suddenly got disconnected to the FCM server. I thought it was normal so I restart the app, but weirdly it led me to the account selection screen. I choose my account three or four times. but every time it show the screen "failed to log in". I restarted once more, then it still led me to the account screen, but this time the loading black screen prevent me from choosing the account. I restart my app many times but the same thing happen.

I also found my last H2H opponent behaviour suspicious, the first half was normal, but in the second half he suddenly do nothing and let me score freely. I wonder if he has a malicious intention to my account, like taking control of my acc and destroy it.

Is there anyone who meet the same situation and have you fixed it

355183062708 is my ID