Hi,
Which editor is your default editor ?
You can override the editor used in the HikaShop backend in the HikaShop configuration.
You can check if you don't have any specific javascript error in the webpage, maybe the editor does not load itself correctly.
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.