Hi,
To change the ordering of the products in backend, you have to have filter on "Direct sub elements" and you are now able to order the products in the categories. Otherwise the edition of the ordering will be refused (because you are display all sub elements).
For the characteristics go through Products > Characteristics and select a characteristic then you are able to order the characteristic values.
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.