Sent funds not showing up at receiving address.
If you made a Bitcoin Core (BTC) transaction, please check the intended receiving address on the BTC blockchain to make sure the funds have indeed been sent.
To do the same for Bitcoin Cash (BCH) please check the BCH blockchain here.
If it appears as confirmed on the blockchain, then the funds have been received at that address. If the transaction does not appear there, the funds either were not sent, were sent to the same address on a different network (BTC & BCH only), or were sent to a different address.
If you know which address the funds were sent from, you can also check that address on the blockchain to see which address the funds were sent to.
Please note that bitcoin is an irreversible payment system and there is no way to reverse a sent transaction.