What's the problem with Market Payments?

Just about every internet purchase I make with Paypal, the payment gets credited immediately.  Why does Boonex.com have to be the exception?  If this happened once in a while, I wouldn't care, but it happens more than 50% of the time.  Surely something can be done to make this a little more reliable.

See this post.

AlexT is claiming it's a problem with the sellers. Paypal setup wrong. We shall see. As soon as instructions are available i will follow them.

http://www.boonex.com/unity/forums/topic/Boonex-com-shopping-cart.htm

Paypal setup wrong??  I gotta call bullshit on that one.   The only Paypal setting I have is a single field to enter an email address.  Is there supposed to be something more?

I am sure he is refering to the settings on the paypal side. Not this side. But i don't see any instructions posted yet.

I've been trying to figure this out for months. Even AntonLV was helping me but he gave up after a few emails back and forth of going no where.

I've even created a fresh PayPal account to see if it was some setting in my old account that I had tweaked. Still doesn't auto-process.

Manually processing the my orders is a pain in the arse.