Did you try inserting the serial numbers of those lost products?
You have them inside your account on NI site.
Let me know if you need more info, good sir.
Which version of MacOS are you running, and which version of Native Access? Do you see any of your products, or are they all missing?
-- Mike
Your best bet would be to create a support ticket, because it looks like you're doing everything right!
This is the link for Native Access support - Native Access – Native Instruments (native-instruments.com)