error after payment done.

I paid for your subscription for CS:GO Cheats but after completing transaction i got error saying
An error occurred!

Please open a thread on the forum and notify us about this issue.
Reference: A successful transaction has already been completed for this token.

here is the payment link through i completed checkout:-https://aimware.net/payment/paypal-checkout?action=return&token=EC-40B07906UW035545A&PayerID=VQUH7VH2AZWS4
Transactoin id :-69F864395E369813P 

Please help sir!

msg zim with payment info, email etc.