Help us verify you own this account

Hey, i saw a few time ago a few people got this issue, now its happening to me. Somehow i have now this issue and i cannot solve it, i have tried all the methods but nothing works. Can someone help me with it? When i reset the password and click on the “secure your account” it just shows a web page that says “oops an error ocurred”. I tried using VPN, i tried to report the account as hacked but when i put my username it doesnt recognize my device and doesnt let me continue. Btw i have access to my email, phone, backup codes, everything linked with my account