Can't get paypal plugin to work

I've pretty much set everything up on my site except payment via paypal. I've used this os_paypal plugin before on another system and it works fine. Having read through various forum posts I visited the paypal site and set up the IPN to point to my new shop website and published it.

However, it does not direct me to the paypal website to pay once I have completed the purchasing process. On my other site I get a redirect message and paypal opens.

Any ideas?

Regards
David

Hello Dave,

Sound like the issue was from very old version of EShop. Please re-purchase EShop to have the latest version 2.5.4 and upgrade it to your site, then it will work normally. If not, please submit a new ticket to EShop category to send me the your site information so I can help you to check and resolve the problem.

Sincerely, Giang