Pro Sites does not seem to work properly. On the checkout page https://test.websites.snaplitics.com/checkout/ the user is unable to register for the site after signing up himself. Neither of the payment gateways (Paypal, Stripe with test mode API or Pro site Manual Payments) seem to do anything. When a user tries to pay with paypal or stripe, hitting a pay button does not get him anywhere. When a user submits a Manual payment request, no manual payment request goes to the admin (checked spam box). The subscriber does not receive any emails himself either. Word Press emails declaring user registration are received by network admin, however no pro site is set up when a subscriber registers for it.
test.websites.snaplitics.com is a test area set up with the sole intent of testing the Pro Sites system, so it does not have any other plugins/themes or customizations that could conflict with pro Sites.