This happens when your PC or beam projector's resolution does not match.
1) Connect your PC to the beam projector.
2) Right-click on Desktop and go to Display Settings and make sure that the size of text, apps, and other items is 100%.
3) Right-click on Desktop and go to Display Settings and make sure that the resolution is 1920x1080.
4) Restart GoTouch Windows.
If you cannot change the resolution to 1920x1080, try 1600x1200. If you still cannot change the resolution, it is because the PC or the projector you are using is an old model. In such cases, we recommend to change the devices to an updated ones.