I set up a form with a subscription and it has ipn enabled. The form goes to paypal but does not land on my customized page which I specified. Then if you try to login or click pay with a credit card it flags "The link you have used to enter the PayPal system is invalid. Please review the link and try again." Also, if you click "return to merchant" the page blanks out. I am running new gform update. On paypal form running last version I have no problem, is this a bug?