Make sure your wallet is for Binance Smart Chain, not Ethereum network. Pancakeswap is only on BSC. Then on the Prediction page, at the bottom, you should see a series of 3 icons. Click the one that looks like a clock to view your history, and you should be able to claim your rewards from there. When you click the "claim winnings" button, your wallet (I use Trust Wallet) should show a pop-up that asks you to confirm the transaction. 0.2 BNB should be more than enough to cover any transaction fee. If you have issues connecting, you could try tweeting Trust on Twitter, and they might be able to help you. I hope this helps!