Seller requested a Bank Refund on all in game purchases in Black Clover M

Trade Guardian transaction successfully completed for $450.00 for Whale Account (AS Server) Top Rank CC & Arena.

After selling the account to me today on 16-Jan-2024, seller has requested his bank to refund all the in game purchases that he made and a in game mail was sent to me by the "Game Master"

I have screenshots of the ingame notification that was sent to me to show as proof the seller requested a bank refund for all purchases.