Hello,
I'm sorry but the PayFast plugin was made by the PayFast team and not by the HikaShop team.
Please understand that we can't provide any support on plugin we did not developed.
Regards,
PS : When you create a topic, it's really best to fill the details regarding your website and the version number you're using.
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.