Hi,
You can have something broken in the web page. Your browser will be your best ally in order to know which file are loaded in the page.
Did you check your files ?
I didn't say you had to reinstalled HikaShop, I said you have to check the files and see if there are accessible.
If you have a custom backend file which override the default css file, it could explain some things but not all points.
Please look at the html content of a page or check the "errors" given by your browser.
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.