Hi John_SVP, welcome to the community!
Thank you for your feedback on your experience with the T95Z Plus. It’s uncommon to hear that the Xibo player has been installed by default as launcher, generally what happens is that a prompt will appear the next time you restart your player to confirm if you want to set the player as launcher or choose Home instead.
Your comment about the action bar not containing any menu options is a known issue with many Android TV devices/builds. As a workaround you can use the following keys by connecting a USB Keyboard to the device:
i - This will open the Status logs.
c - This will open the Connect to CMS form
s - This will open the Settings menu for the player (not the system settings for the device)
I hope that you find that reinstalling the player after the firmware reinstallation reveals an option to not set the player as launcher. If it does not and the issue reoccurs, you will either need to contact the manufacturer for support or consider another device for your display.
Also, here is a link to our reboot command guide, which includes examples of reboot commands we would recommend using.
All the best resolving the launcher issue. If possible it would be great if you could return to this post with an update, in case any other users are considering using this device.