I have just financed a bike. I have added and linked my VAF account to my app. There is no option to make aditional payments into the VAF account. My question is regarding the process to follow in order to make an additional payment? There are no clear instructions on how to do this anywhere, and it is frustrating. I have tried loading the account number as per the statement sent as a beneficiary but get an error message saying it is an invalid account.