I have develop some PHP classes to do an expressCheckout call with API. All is ok but when I do the doExpresscheckout, the paiement is not initiated.
I could provide you some restricted FTP access until you accept the project. I have done a example form to do testing.
All the job is almost done, I think this is just a small thing to correct. I use the 80.0 VERSION.
As this project is very easy, I have a very low budget (45$). It's just an hour or two of debugging.
I just need a person who know well the paypal expressCheckout/doExpressCheckout method.