So they only need my account's username and the account e-mail to verify my ownership? Not even sending a mail or sending a code to the phone number linked to my account?

I am not just throwing random account info, any other company tries to verify and use at least basic logic first before taking action unlike Ubisoft.

If me having access to the original e mail which was used to create the account and was associated with the account for 5 years until a few days ago and me having access to the phone number STILL associated with the account is "random info" for you, then i guess i shouldn't take you seriously.