Luna has a very strict compatibility filter. If a VST3 crashes during scanning, Luna blacklists it. Go to %appdata%\Universal Audio\Luna\ and edit the Blacklist.xml file to remove the offending plugin name, then rescan.
LUNA now officially supports VST3 plugins on both macOS and Windows. This allows you to use your favorite third-party tools—like those from FabFilter or Soundtoys—directly in your session. luna vst
Initially exclusive to Apollo hardware, LUNA is now available for both macOS and Windows Luna has a very strict compatibility filter