I've downloaded the ProRes Export Profiles but not seeing it as an available option while selecting rendering options (Rendering - Kdenlive , Render Project > Format

The ProRes Export Profiles indicates it has been downloaded (indicated by "install" button having changed to "Uninstall" in "Get Hot New Stuff >> Kdenlive Add-On Installer window.

Do downloaded export profiles need to be activated or made available within Kdenlive in some way? If not, am I missing something?

I'm using:
Kdenlive 20.12.1 appimage running on LInuxMint 19.1


Thanks!
Ed