V.8.5.5 : Community integration doesn't work
Today I have performed fresh, clean install of C5 v8.5.5.
Everything works fine except community integration.
I have logged in to c5 community from my dashboard - and after that I have noticed iframe (100%/100px) with my own dashboard login screen.
When I returned to "extend concrete5" section - I still have CTA button : "connect to c5 community" - but in my profile I can see multiple entities for this project.
How to check why my C5 instance is not able to connect to community server?
I have reviewed server ewrrorlog - but there is nothing related to c5...
ANy ideas or anybody had similar issues ?