kolab loggs me out automatically / just after installation

[Realos]

hi,

I have just installed kolab with openpkg. When I login to kolab server
with manager account, I can not change any settings. When I try to
change any settings, it loggs me out with following error:

Errors:
Please log in as a valid user

Can you please give me a hint what could be the reason?

I am completely at loss at the moment.

Thanks in anticipation and regards,


-- 
Realos