iZotope RX7 not working with new Mac - tried all iZotope website suggestions

Hello!

I've been using iZotope's fantastic RX 7 plugins on my old mac for the last couple of years.

I've just bought a new mac and I can't get iZotope to work natively with FCPX.

I know there's an issue with iZotope's products and Catalina.

After trying all the suggestions on their website, including safe mode / root user / permissions associations to no avail I've used my old machine to air drop the file architecture and programme elements of RX7 on to my new machine.

But I can't get FCPX to engage with it and show it as a plugin option.

Is there any way of isolating the plugin elements in my old machine and sending them across to the new machine to see if that works?

Or is there another, easier approach that I've missed?

Thank you so much for any time and perspectives on this!