I setup a few subscriptions for services on my site. A few weeks ago, I successfully walked someone through getting subscribed to one of those services. Tonight, I was trying to get someone subscribed to that same service and when they try to log into the Paypal site, we got this error: "The link you have used to enter the PayPal system is invalid. Please review the link and try again."
Why would it all of sudden not work? I didn't changed any settings in WP eStore or Paypal. I know at least three people who are going to use these subscription buttons in the next few days, so I'd like to get this resolved asap.
The site is slushman.com.
The specific product in question is: http://slushman.com/services/family-hosting.