I check “Show Hidden Devices,” but it still doesn’t show up.
EDIT: Ok, I think I fixed it. I went into the AppData\Roaming\Renoise folder and moved the two plugin cache files (CachedVSTs_x64.db and CachedFailedVSTs_x64.db). This forced renoise to rescan all plugins. It found Tal Chorus, and it now shows up in my device list!