Hi Lukasz,
This looks like a support issue and you can address our support team for
such kind of things.
Related to the problem, could you please check if all your cameras are correctly assigned to a folder in the Management Client (under Devices menu).
If you still experience the issue could you please provide a screenshot with your camera folder structure.
/Svetlana
i’ve only test this solution (i’ve installed trial yasterday) i belive there is no support for a trial version 
but the onvif bridge is a feature i’ve looking for in my setup and it’s the main reason i’ve consider buying the xprotect and this one feature don’t work
but there is a screenshot you ask
Hi,
Could you please remove all not camera devices from the folder and try again.
By the way, what steps did you performed to add them there?
KR,
Svetlana