Paypal Express returns to website login again after confirm with Header Tags SEO for osc 2.3.1

[papagino]

Hi,

I have PayPal express checkout on my site and everything worked fine before installing Header Tags SEO for osc 2.3.1.

 

Now, whenever you checkout and click on the "Continue" button from the "Review your information" of PayPal checkout page, it goes back to the login page of my website

(with no transaction registered or completed).

 

If I go in OSCommerce 2.3.1 in "Configurations" then "SEO URLs" and set "SEO URLs" to False, the problem goes away.

 

Can anyone tells why this happens and to fix this problem?

 

Cheers

Dan