To filters the profiles you see, ensure your muzmatch app has Location permissions - to do this tap the Filters and Prefererences button (top left) - or go to
Menu → Filters & Preferences - and grant Location Permissions.
Once done go to DISCOVER and view new profiles - your location should now update using your GPS and use any filters set.
Note: Users shown in Explore's
Likes You and
Visited You only filtered by your Age and Location Filters.
The more you filter the less profiles you will see.