Banned for a T-shirt I uploaded 4 years ago

So basically I created a donation T-shirt for a mil-sim group called "IRGC" created and owned by my chill Iranian friend back in late 2019/early 2020. I joined around February 2020 and became a pretty high rank/good friend of the owner after a few months, this was around the time I uploaded the T-shirt. At the time, I was just a 16-17 year old British lad who knew nothing about Iran or that IRGC had been declared as a terrorist organisation by the US (not my country so I especially wouldn't have known). So as far as I knew, it was just a branch of the Iranian military. I know it sounds like I'm playing dumb but I genuinely was that naive and clueless at the time.

I've had this account since February 2014 and have so many memories and friends that I've lost contact with now which sucks. What also sucks is that they refuse to read my appeals with any consideration and reply with the same robotic answers.

https://preview.redd.it/ru5qzi78hmee1.jpg?width=637&format=pjpg&auto=webp&s=b66008f38f3af180266e0f9dd6e5cc9eecaa4826

https://preview.redd.it/wmvw9i78hmee1.jpg?width=532&format=pjpg&auto=webp&s=4d21bb4b96ba457fa3f5505ffe5d19ff2fc4e769

I get that there are strict rules regarding terrorism, but it's not only not considered a terrorist organisation in the UK (where I'm from) but it was literally just a T-shirt. We didn't enact any terrorism on the platform, we just held massive SSUs against rival USMC groups.I also have no clue how I could transfer ownership of my group to my alt. I have paying customers who requested custom clothes but can't fulfil their request now.

(The logo I uploaded)