Keeps going into “Application Not Responding” when I try to activate it.

It worked for a while, and I thought “Great!” Now, whenever I try to activate it, it goes into “Application Not Responding” mode and I get the spinning beach ball. I have tried (repeatedly!) uninstalling it with “Clean My Mac” and re-installing, and as of Nov 23, 2015 I am using V. 2.2 with still no improvement. I shall simply have to revert to using “Caffeine”, which may be starting to show its age, but still does the job with no fuss, no muss, no dishpan hands, as the old commercials used to say!

Living in TO about Amphetamine, v2.2