can't creat infinite worlds

What hapend is that when i creat the infinite worlds i can't

What i thought should happen was to clic on infinite world and to creat the world.

What actually hapend was when i cliced on infinite world it came up with a warning saying "unsuported on this device"

How to do this:
1.you clic on "new" to creat a new world
2.arfter that when you have put in the name and the seed etc... you clic on advanced then on infinite.
3.then my device cumes up with a warning saying "unsuported on this device".