Joomla's backend Admin panel invisible

-- HikaShop version -- : 2.6.3 business
-- HikaMarket version -- : 1.7.0
-- Joomla version -- : 3.5.1
-- PHP version -- : 5.6.20
-- Browser(s) name and version -- : ALL

Hello,

If a user does not have a vendor's hikamarket account, even if he is a superuser, when he logs at the backend of Joomla, all the joomla admin menus are not there.

I think you missunderstood the problem, or maybe I cant understand your asnwer.

The problem is that IF a super admin is not also a Vendor, he can not use the backend at all, to do anything at the backend.

I might have 3 administrators and SuperUsers who are not also vendors. Why shouldnt they be able to use Joomla's backend?


To be more Specific:

I my self, am the developer of the website. I dont need to be a vendor also. If I remove the vendor properties for myself, I can no longer access the backend as a Super User.