As Moris45 recommended, I submitted another appeal to EA and included my personal account data within a text document, as this would turn out the only document typ they would allow me to upload and include inside my email.
You can read thru my appeal as follows:
***BEGINNING*
"So again I am turning to you regarding this issue.
I find it appalling that you people would turn down my request without even granting me the dignity to scrutinize and then provide all the available data, lest not forget to put up a thorugh investigation on your part.
As you can see per my personal account data I downloaded and attached to this file as text document, I did not even log in to my account on the respective dates, henceforth have I not been playing Battlefield 2042 on the dates in question.
You can review the file for your own discretion and hopefully come up with a detailled response as to why you would accuse me of cheating.
Again, I am asking you to lift this completely unjustified ban and treat a lifelong customer with the respect and dignity he deserves.
Respectfully,
Jan Rütter"
***END***
I'll keep you guys posted if this changes anything.