If you do not want all your visitors to respond to your survey, you can enter in a "Skip" Count. For example, with a skip count of 10, 1 random visitor is selected from every 10 visitors to your website, and presented with the survey.
A value of "0" disables this skip feature.
Where is this option?
If you make any changes to popup settings, please make sure you copy the latest code and use that on your web site/page. Any settings changes affect the code generated.
I am done collecting my data - How do I disable the survey?