I am sorry you are having an issue with the touchscreen on your device.
If your touchscreen is not responding or not calibrated, you can perform some steps to check the software and help determine if it is a hardware failure.
Please click link below to see if it works for the issue you are having.
Let us know if it works.
I also suggest you check our FAQs with very important information and troubleshooting that can be very helpful to our users.
http://acer.custhelp.com/app/answers/detail/a_id/11564#_ga=1.213513111.263337500.1415824428
http://www.acer.com/ac/en/US/content/ask-acer#_ga=1.14932277.263337500.1415824428
