Hi Tuan,
I just updated my Joomla site to 3.4.0 and installed the latest version of Membership Pro. I am doing some testing and made a test membership using the paypal sandbox.
Under that test membership, there is a transaction ID, but I am unable to verify the ID against anything on our paypal account. It's like the generated ID is completely random. It doesn't match anything from the buyer's account or the facilitator's account.
Do you have any ideas about this?
Thanks,
Elliot Block