Pro-sites Stripe payment doesn't redirect to confirmed page after payment.

Using Stripe payments, whenever an existing user decides to create a new blog, when they submit their payment to stripe, it accepts the payment & the charge is successful.

The blog is created, but the page just refreshes to the payment plan page instead of confirming that the payment was successful, this means the user isn't sure their payment was successful or not.

This happens in both test & live mode.

It works ok if it's a new user registering, but not for existing users who create a new pro-site.