WalletConnect problem

[Marcos-gp]

I'm a layman in the NFT world, and recently I went to make a currency exchange at PooCoin, I wanted to convert BNB to Bcoin and when I connected the Poo Coin account to Metamask I went to the second option written "WalletConnect" and asked for a QR Code and I confirmed it, out of nowhere my BNB disappeared from Metamask and I don't know what to do, if anyone can help me and help me with this I'd appreciate it!