Frankly speaking, your screenshot brings us nothing for a perspective of your issue.
What I can "speculate" from your screenshot is that you connected your PC with multiple monitors.
Then, nothing close to come up a "suggestion" to let you try.
I do understand you could be pretty upset after you paid for something but not able to use it as what you expected.
However, as an end user, it means your might not be an expert of powerdvd nor the engineer who develops the playback features.
If you kicked off the troubleshooting with their technical support, showing a positive attitude to cooperate with them will be helpful to investigate or help the issue you received.
That's what I experienced from the technical support of different companies not only cyberlink.
Cyberlink support helped me sort out many uhd bd playback concerns since this feature came out in powerdvd 17.