I never signature verified the account, so I don't know how I can prove otherwise.
You have posted this BTC address before resetting the password. You could proof the ownership by signing a message from one of these.
3GA6Y7oU4g23Uo8GUbr2bWhz7kSJ3bMcrX
OR
Address: 3KtrrgkVUTFy48qQgap7t8JdBmjA8sg3WB
I am happy to verify my mailing address with anybody that has previously conducted business with me.
Recent password reset already confirms that you own the email. But that does not proof the real ownership as email could be hacked too.