Hi have a paypal credit account and I am able to make purchases on my computer but not on my mobile. I'd like to make a booking.com purchase via mobile because they provide a lower "mobile rate" however the paypal feature though shown is "greyed out". I can use it with no issue if intiating payment from computer. This doesn't make sense to me. I am currently out of the country and using a different number but my account is linked to US bank account. Please advise why it wont work on the phone.