Brawl Stars Account Wrongfully Banned – Request Account Reactivation

I am writing because my Brawl Stars account has been permanently banned for “attempting to buy, transfer or sell an account,” even though I have never tried to sell, transfer or buy any account. Yesterday my account was suddenly banned and the game started showing a warning that my account was permanently blocked due to account purchase or transfer. The only thing I did was log into my own account on my tablet and another device; I have never sold or transferred my account to anyone and I have never attempted any such action. After the ban, I contacted Brawl Stars / Supercell support. They only replied that they would get in touch with me as soon as possible, but my account is still closed and I have received no clear explanation or review result. I request that my account be reviewed in detail, that this mistake be corrected as soon as possible and that my permanently banned account be re-opened, since I have not violated the rules stated in the warning.