Congrats for the 1.0 release. I have one issue with the free version, the app doesn’t recognizes all my plugins (Mint 22). I have various synths installed (vst3, vst, clap, lv2), but almost none is seen by the app. Only the TAL ones are seen, and interestingly, a companion plugin for SurgeXT is seen (but not SurgeXT itself). I’m not sure why that is. I don’t have Carla installed btw.
Have you tried adding your plugin directories manually in the settings?