ok now i keep searching post and trying to recover the system, i just wanna reset all and delete all the orders history etc, i do search and i truncate all the table related to orders, and suppose that will work and then test to purchase through my store again, yes again i can pay with the paypal with my creditcard , but once i click back to merchant page, the success check out page show

your order number is :

you've got a blank order number after i truncate all the data in orders related table

and again no history in my zencart after payment, the payment is success, and it never write any data into the order related tables, any idea ? thx