wpressdr on "Can't access in frontend and backend from same browser/and time"

Hi all

I ve really a weird problem with this site, i found that i can't access from the same browser contemporary in front and backend. This happen with all different browsers. If i login as admin i can't see thefrontend it keep loading, if i logoff it work perfectly. I check almost everything but i didn't find a solution.

Hi @Samuel,

Which theme installed on the site and where the site is hosted?