"many appointments are ... prescription renewal that can be done over Skype, clearly not all."
Skype just to renew a prescription? Why?
This is a prime example of the "must use an app" mentality. These have been done by old-fashioned phone to a receptionist for years or, if you really want to go digital, by filling in a request on the web-site. It's possible, however, that periodically the doctor might wish to review by seeing and examining the patient rather than blindly renewing a dosage for years.