On this page of The Witcher Monster Slayer guide, you will find information about what the "Your device is not compatible with this version" message means, why it is displayed, and which phones support the game.
Devices that can run The Witcher Monster Slayer must be supported by ARCore. This is related to the camera, motion sensors, and a powerful enough processor. There should be no problem running the game on these phones.
Why is the message shown?
If you see the message saying "Your device is not compatible with this version", it means that your phone is not currently on the list of the devices that can run The Witcher Monster Slayer.
A full and constantly updated list of phones and devices on which you can run the game can be found on a separate page of our guide - Phone list.