The MIST online course is compatible with all PC's / laptops / Macs.
For tablets, this will depend on your devices specifications.
If you experience a screen size error message on a computer, try lowering your zoom level.
One way to do this is :
Press and hold the CTRL key (bottom left on the keyboard) then tap the minus key ( - ) once or twice.
The course content should then show.
If you get this message on a tablet, unfortunately this does not meet the minimum requirements for the course.