According to EU laws, no exchange has the right to freeze your funds. Even if it is found that you are from a sanctioned country, like all reputable exchanges, they should release your funds and not serve you after that. They block your money with the policy and promise of customer security.
You can file a complaint with the Federal Police and all its members, especially the CEO (Oleksandr Lutskevych) linkenin : https://www.linkedin.com/in/olutskevych, should be punished and compensated.