figured out the refresh rate... Rated 5 out of 5 stars

To randomize the refresh rate, go to the Firefox tab, click on add-ons, then click on extensions, next click on options in the Check for change row, click on settings, enter the number of percentage of randomization you want.

Love the program, ready to donate! You are making it possible for me to get freelance work and feed my kids.

This review is for a previous version of the add-on (