How do I claim an account i don't have access to anymore?

The person I sold the account to is a good friend of mine and I know for a fact that he didn't cheat.

Soldier Name: 71ppy
Link To BF4DB Soldier Profile: https://bf4db.com/player/820763212
Have You Claimed Your Soldier: I believe so yes
Appeal: Hi i am still not please with my ban because the "linked account" was mine a long time ago but wasn't at the time of the ban. I have no evidence to back this up but i did sell my "linked account" a long time ago. I don't know if I am allowed to make another ban appeal but since so much time have passed i thought it couldn't hurt.

Regards,
Zippy

I am not sure and i dont know where to check it because i am not a part of that forum anymore, but it was around when the DLC's were free.

My account link: https://bf4db.com/profile/Zippy - I dont know if that is the link you want so i will link the other thing aswell

https://bf4db.com/player/820763212  I have claimed ownership of the account.

Ban information: https://bf4db.com/player/1837784976

"This player has been banned by BF4DB and any game server protected by our anti-cheat plugin

Reason: Linked Account

Why i think i was banned

The "cat_owning" account i bought when the DLC's were free to be able to make a little bit of profit on that (I think i made around 5€). I sold the account to a user on the Danishbits forum (p2p forum).

Why i should get unbanned

Yes i created the account and bought the game but i transfered ownership to another person. I have never cheated in BF4 and never will. I know that i can play on servers that isnt protected by BF4DB but almost no servers are unprotected wich is a good thing.

English is not my first language sorry.