Hi,
You have a button "rebuild" in the toolbar ; it should fix your categories, band and order statuses.
HikaShop use the "category" table for all these elements and if you break the tree structure (same structure than for the Joomla categories), you can have such kind of issue.
You can also use the toolbar button "check database" when you're in the HikaShop configuration.
It could fix some elements too.
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.