Fixed PayPal sandbox change, just fyi

[Robbo]

For the sandbox to work now you need to change the URL used to https, PayPal made a change some time since you first made it. Took me way too long to figure out that was the issue :/

 

[Jon W]

Also just spent way too long trying to figure this one out.

 

[Mike]

Fixed that so hopefully it won't be so confusing in the future.