Here is a step by step for resending surveys. You can also watch the video below...
1. Surveys
2. Pick your date range
3. Use the blue button to Apply Filter
4. Next to the apply filter button, you will see a paper airplane button that looks like this: 
That number tells you how many surveys are available to bulk resend. If you select it, it will resend to all 117.
5. To individually resend, simply scroll down in your survey list and on the far right, you will see the paper airplane image again which notates that survey is eligible for resending. QDS has made it to where you can't resend surveys that have already been answered or have already been sent within the last two days in order to prevent accidental spamming of your customers.