No layout of dashboard

-- url of the page with the problem -- : www.web-itc.be/langhoirs
-- HikaShop version -- : 3.3.0
-- Joomla version -- : 3.8.5
-- PHP version -- : 7.1
-- Browser(s) name and version -- : mozilla

Dear

I have installed hikashop, but the layout on the backend is faulty.
Please take a look at this screenshot to know what I mean.

How can this be possible? And how to solve it?

Hi,

This looks as if you have set the "backend CSS file" setting of the HikaShop configuration to "none" or to an old version of a custom backend CSS file. Set it to "default", clear your browser's cache and it should then display fine.