Hi,
We made some hot fixes during last few days. Depending when you downloaded HikaShop 2.2.2, it could be very interesting to redownload HikaShop 2.2.2 (install it as an update) in order to fix some problems with the checkout and the registration system.
Regards,
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.