The Meaning of Life, the Universe, and Everything.
No, you haven't been banned- read that link I provided you and criticsquid explains what happened. Fandom bought Curse from Twitch and part of the transition of ownership from one company to another required that EU members of the community authorize the transfer of their content from one owner to another under the new GDRP regulations. In December announcements were made and e-mails were sent out but it seems like there were some issues with e-mails being sent to the right address and forum PMs not being used that resulted in many EU members not noticing what was happening in time to respond. Since they did not get your approval to transfer your data to the new owner it was deleted. Further details, information and speculation can be found in the forum thread I linked before.