If you've created some promos and would like to know how many times they were applied, you have 2 options:
You could use the:
Promotions Report (this is the fastest and easiest method); or
All Transactions Report (filter your reports by using Pivot Tables)
If you need further assistance, do contact the Customer Support team by email at firstname.lastname@example.org, live chat or by phone at +(603) 7890 2881.