Session problems after update of enfold

Hello since your update we have several problems with our page.
Some changes were lost and one of the main problem is that we cannot be logged in.
If we go to our admin page then everything seems to be fine. But if i switch to the frontend then i can see on some pages the black admin panel on the top but it disappears after i click randomly on some sites of my website. It seems that sessions cannot keep that long and they are gonna deleted within one minute automatically. I reinstalled the core of WordPress however i have still the same problem. I deleted my browser cache and also used google chrome or safari but it seems it is an issue with the theme. We have this issue since your enfold update!! We can only see our frontend like a regular user but we cannot administrate it. The complete frontend editing does not work because we do not see any panel in order to be able to edit anything. We have to do every change of our site from the backend. Please fix this issue because it is due to your faulty update. It broked our complete site.