After the Windows update, I finally updated the MacOS versions of my preamplifiers. To register the Audio Unit v3, you just need to launch the app, which was the step I was missing.
I’m please to announce an update to my preamplifiers. They have been ported to use JUCE instead of WD-OL which will help rebuilding them more easily.
The MacOS version will be out soon (hopefully) while I sort out hardware issues!