I am struggling from few hours to get the PayPal Buttons module to work on a membership site. I have registered a test account with the PayPal Sandbox website. I have created the membership product and configured PayPal Subscribe Now and Manage Subscription buttons. When I click on the Subscribe Now button I am redirected the PayPal site.
I am getting an error message on the PayPal site:
"The link you have used to enter the PayPal system is invalid. Please review the link and try again."
The page has the title Return to Merchant.
What am I doing wrong?
