Thank you for your quick reply. I managed to get the VST3’s to work by moving them out of the Eventide folder they were installed in, straight into the VST3 folder.
What remains is some VST2 plugins not showing in the Ableton plugin folder.
When I open an older project featuring those plugins, there’s an error message saying the plugins are missing.
I don’t mind moving to VST3, but would like to be able to open older projects.