When you have multiple coupons featured on the pop-up, you may want to disable the coupons which are not applicable to show only the usable coupons for a customer.
Here's how to do that:
1. Go to Dashboard > Coupon Pop-up settings
2. Then look for the option Deactivate coupons which are not applicable. Turn this option on.
Once enabled, the coupons which are not applicable will appear disabled as shown below.