Edit History

Thank you Pascal You solved it wahoooooooo

I'm not technical at all so i showed your message to our developer in India, he went to work and now everything is working, cant believe it it's been a painful two weeks lol.

Many thanks for your help, you're a life saver! 

I'm not sure to what extent he followed your instructions as i said im not technical but as he explained to me it sounds like he did this below..... (btw, before this, we had tried EVERY SINGLE suggestion in the forums without any luck for us. So our module was in simpleton terms ''SCREWED'')

1) found an old backup of our website (from a time when our website was perfect including perfectly working paypal module). 

2) installed the old back onto his local computer, test paypal and it worked (we knew it should anyway as that was the working copy).

3) in our specific case our backup was the old version of prestashop 1.4.7 because we had recently upgraded to 1.6.0.11, this meant after testing paypal works he then upgraded prestashop again to 1.6.0.11. 

4) after upgrading to 1.6.0.11 he tested paypal again (paypal sandbox) it worked. 

5) now he took the working, upgraded website from his local computer and upgraded it to our live website, but on a subdomain. 

6) now the website was on our live subdomain he tested paypal again, it worked still. 

7) at some point here, he also upgraded the frontend of the site or theme (i believe, i may have this one in the wrong sequence) and checked paypal once again to make sure its still working, it was still working.

8) after testing all is working he then moved the site from our subdomain to our main domain

9) our paypal module was/is NOW WORKING AGAIN after two weeks of paypal developers and our developer trying to fix it. 

If anyone needs a more detailed version of what he did i can ask our developer to explain, i think you will find what Pascal said above is the detailed (technical) version of what he did/what you should do. 

Any one who is suffering from this paypal issue, you might want to consider a re-install of prestashop, or rollback, or using a backup of your website when the module was working. This was the ONLY way of fixing the paypal module for us. Paypal concluded the issue is the actual module itself, however strangely you cant just remove it and re-install it to fix it and you cant just use a different version to fix, which you would think you would be able to do if the issue was with the module (we actually, do try those options first, it does work for some people). 

Good luck everyone, thanks for your support Pascal, was about to give up on the Prestashop platform. 

kris