Dorico 5 not recognising some vst 3 plugins

Dorico 5 doesn’t seem to recognise some vst3 plugins. I was trying to load the Plugin Alliance ADPTR Metric AB vst3 in Dorico 5 Insert Effects, However, the plugin doesn’t figure in the list of vst 3 under the “Insert Effects” slots. I tried resetting/ clearing the audio engine cache but no avail, can someone guide me how to make the plugin visible?

If you’re running an Apple silicon-powered Mac, perhaps the plug-in is not yet Universal, and will only appear when you run Dorico in Rosetta mode?

Thank you Daniel, I am on Apple Silicon Mac, shall try on Rosetta mode