You select a game, the screen turns black, and you return to the ROM list. This is a video driver issue.
You must provide your own ROM files. Place NeoGeo or CPS games (in .zip format) into their respective subfolders within the Kawaks directory.
To fix the emulator, you must identify your specific error. Based on forum threads (Reddit, XDA, 4chan’s /vr/), these are the top 5 failures: