Hi,
Yes ; regarding the ticket, Mohamed performed some tests and found the issue.
It looks like it was coming from the fact that you have edited your "California" state for the value "Code 3 letters".
So Mohamed reverted it to use the default and correct configuration.
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.