I sent a support ticket and they've changed the email back to the original one, and then they sent an email with the link to reset the password, so I did that.

The interface language was set to English (I don't normally use Discord in English), so I changed it to Brazilian Portuguese. I then proceeded to delete the scam messages and checked all the pings and friend requests, as there were some unread pings and 3 friend requests.

I was considering deleting the account back when it was hacked, but I'll be keeping it as a backup.