Hello,
I can see in your field configuration that you have a category selected with no name.
I think that you should fix that.
Afterwards, with checkbox fields, we generally recommend to use a number in the "value" and a text in the "title", not the opposite.
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.