Why does Rover.com only accept credit cards as payment for bookings?

We live in the Greater Victoria area of Vancouver Island, Canada which has an extremely large seniors population many of whom own 1 or more dogs. We have had a number of seniors who have generated a pending booking request only to find out from them that they do not have a credit card or refuse to use a credit card for on-line transactions and would rather pay cash for the booking. When we explain to them that we do not accept cash and why, they basically do not proceed with the booking and find someone who will provide the service for cash There is no " given reason" to cover this situation when archiving a failed booking but it is a legitimate reason that should be recorded & tracked by Rover to see how much business is actually lost due to credit card payment only policy. Suggestion : Since we get paid by Rover through PayPal, who then direct-deposits those funds into our bank account, we should be able to accept cash payments on bookings where payment by credit card in not possible or declined by the customer, deposit those funds into our bank account, transfer the funds from the bank account to PayPal, where Rover can then request the funds directly from PayPal. This would work in the exact reverse fashion from how we get paid from Rover and should work just as smoothly. Hate leaving literally thousands of dollars on the table, so to speak, for non-Rover doggy service providers to pick up. Yours sincerely, Otto S. Saanichton, B.C, Canada.