On the Swipey Screen page, tap the purple magnifying glass icon on the top right hand side.
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Select categories you want to show in your search. Note that all Self-ID's are ON by default (highlighted in purple). If you want to turn any of these off, just tap the icon. The color will change to gray when Self-ID's are off.

You may also set the distance and countries of your search.  Once you've set your preferred categories, just tap the "X" on the top right side of the screen to save changes.