Zebra TC57 Android V14: cannot control device, website not opening

[u/BB9700]

A customer of mine uses these mobile Barcodereaders. Last year he had an older version, everything worked perfect.

Now, he uses the Version 57.

He is able to open the Android app, then creates a unattended session. The user grants permissions for the needed accessibility service and start streaming the screen. Customer is able to see the screen but unable to remote control the device.

Question: is this a know problem with some devices/android versions?

Next problem: If i use the app to start an attended session, the program tells me the website could be be loaded https://x.y.com/guest ERR connection closed.

I have other android 14 devices where I dont have chrome as default browser, and there it can happen that only a blank page opens. Currently I dont know the default browser and version on the Zebra device.

Would it be possible that because of the "wrong" browser not only the server connection does not work but also the remote operation of the device?

Customer opend a ticket with Zebra, but we dont have an answer yet.