First time being banned, commemorating the first day of being banned, no multiple accounts on one device, no changing phones, no altering time. A few days ago, when receiving an airdrop, a 502 error popped up at the top of the screen, thinking it was a system issue. Yesterday, when receiving an airdrop, an unexpected operation popped up, thinking there was a problem with the account, so I contacted customer service for a manual check, which showed no abnormalities with the account. This afternoon, I was subjected to risk control.