Transfer problem

Hi, I transferred 48 XRP, but 26 XRP is no longer in my wallet what should I do

Please I have been having difficulty in transferring my Polkadot to binance despite inputting the right wallet. Even tried to swap to BNB but it does show zero balance while trying to swap yet my balance is visible. Polkadot seems to be the only coin I’m unable to transfer,others went successful