I also experience like this before. All of my personal details are wiped out. And the 2fa authy recory was lost I was thought that I saved it on my google spreadsheet. So I cant acess my account in exchange, they ask me to send details just like doing kyc procedure again.

What I learned is always write down your pk, 2fa recovery and put it in a safe place. As long as you still have an acess to your gmail or any cloud storage where you saved it. Please do have a double backup.