ZenScreen MB16AMT frozen, power buttons not responding

[rdev02]

System: ZenScreen Touch
Battery or AC: both
Model: MB16AMT
Frequency of occurrence: sporadic
Reset OS: ???
Screenshot or video:
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Detailed description：
When I closed my MBP lid and disconnected the monitor, and closed the folio, in 10 minutes I was not able to do anything with the screen. Controls do not work. The screen seems to be frozen in ambient lighting and the power button is green. Holding power button or menu and power button does nothing.

[GEEK_ASUS]

Hi there,
Here we mainly discuss issues regarding laptop.
If you have issues for your monitor, please contact local call center to have further assistance.
https://www.asus.com/support/Product/ContactUs/Services/questionform/?lang=en
Thank you.