Membership: The link you have used to enter the PayPal system is invalid.

Hi, I'm using the membership premium plugin but I'm getting a paypal error when trying a live purchase, The link you have used to enter the PayPal system is invalid. Please review the link and try again. I've searched the forum and read the instructions but have not found a solution. Is there some required steps to do in paypal?

The url looks like this, https://www.paypal.com/us/cgi-bin/webscr?cmd=_flow&SESSION=4dJ2tv5cj4l4DDf1NxLZwqsqrhfRqiWDH6GZBocEGk87g1GQ7IDyi&dispatch=5885d80a13c0db1f8e262663d3faee8df

I've selected the express option in paypal but I'm still getting the same error