Notarization problem with Python plugins

I have a plugin called Dotter, which relies on some precompiled Python modules. First it relied on ufostroker, and then yesterday I added kurbopy. Both modules are compiled in the same way and with the same toolchain, neither of them are codesigned or notarized, but now users are having problems loading kurbopy.' not valid for use in process: library load disallowed by system policy

What I don’t understand is why that one, and not ufostroker? How can I notarize these .so files so that they can be loaded?

Haven’t done that in a long time, but back when I needed it, I followed this tutorial successfully (also with plugin bundles that contained .so files)

No idea if this works in your case, and you also likely know about that linked stuff already anyway. But worth a shot mentioning.