Best offer error

[lincoln816]

 i keep getting this when I send in a best offer, can anyone help?

[fargvs]

Should the error message persist, try adding a Bank Card # to your Managed Payments setup in order to send and receive  payments using these links .

https://www.ebay.co.uk/help/selling/fees-credits-invoices/setting-changing-payment-method-fees-selli...

https://www.ebay.co.uk/help/selling/getting-paid/start-getting-paid-ebay?id=4795&st=12&pos=2&query=S...