Our app is still growing, so membership in your area may be on the upswing; it may take a little time to get responses, but it's worth checking back & continuing to swipe right on everyone that looks interesting!
We've found that folks get more interest when they have a few different photos in their profile, as well as having a number of different hashtags. These are easy things to adjust and often changing up the profile periodically can catch folks' eyes in a whole new way (and lead to more matches!).
It's also helpful to make sure the profiles you are set to "See and Be Seen" by are inclusive of all the genders you're interested in. You can change this in the Boundaries tab in the app.