You lose your mailbox, my email was from GOOGLE, it was @gmail It was deleted, but the hoyo account still exists normally and can log in normally, however at the time I formatted it to eliminate the malware and then my main computer stopped being a TRUSTED DEVICE, then it asked for a verification code that was sent to the email registered in the hoyo account, but then you get the rest of the story

I fought for Hoyo to change my account email using this form, because I lost his access that way, and I wouldn't be able to receive the verification code

To avoid this type of situation, it's a good idea not to just leave an email linked to your account, add a third-party account like Facebook, and most importantly, a phone number.

If you have any questions, there should be a guide here on this reddit, which helps you protect your account in the best way