I've got 3 gen 1 cameras I've moved from a home we sold and I can't find the magnetic plates. I've seen the other threads.
Do you still not sell replacements? I've got 7 cams in total and I'd rather not replace them with Ring equipment. The three are useless in my world without the plates.
I'm more than happy to pay for replacements, it's my fault they're lost. Seems odd they can't be purchased.
Unfortunately, Google Nest does not sell spare parts.
The customer on this thread found a third-party solution: