When I checkout with my sandbox emails, I get the error:
There was a problem connecting to PayPal to setup your purchase. Please try again.
580022 – Invalid request parameter: email cannot be blank
580022 – Invalid request parameter: email is invalid
I am using a ‘Business’ Sandbox email for the seller [vib.in/store11/store] and a Personal email for the buyer — there used to be a Paypal window that would open where I can input Buyer Paypal credentials upon checkout, but it’s not opening anymore for some reason and this error pops up.