Hello Alfonso

Yes if you add to undeposited funds it will not match because by putting a transaction in that section you are saying it has not physically been banked yet and therefore you cannot match it in banking as it only sees matches from banked transactions.If you go to the + symbol in the top right >bank deposit you will see any transactions you have sent to undeposited funds and you can allocate them to a bank account in there by ticking the transaction and from account in the top left selecting a bank account and then saving.

You mentioned that you could not select the bank account in taxes when recording the refund,do you have your bank account set up as a cash at bank and hand account type in the chart of accounts?

Emma