Hello Andro,
The demdex call is responsible for generating the registration token in Adobe and since you are getting an error on that step , it could explain the problem.
Ideally , after the dpm.demdex.net call should be followed by :
if this is not happening , then I guess this hostname is not known in google ecosystem and hence the demdex call is not successful.
Probably the app developer can help you in debugging why the demdex call is not working and transferring data to google APIs.
ideally a successful call would look like this.

Regards,
Adhiyan