Amazon is shutting down their Cloud Cam service on December 2, 2022. I have 10 of these devices that I had already been phasing out with a different solution. I was planning on selling my Cloud Cams but now I can't do that in good faith, given that they will be useless in less than 6 months.
It's such a shame though. There must be millions of these perfectly good cameras that will soon become e-waste. Is there anything useful that can be done with them? Is there any hope that somebody might release a hacked firmware some day to make them useful again?
I think it depends on what every other customer does now. If everyone floods the second hand market with second hand, soft-bricked cameras because Amazon hates the planet for some reason, people might buy them and hack them.
I don't expect anyone interested in running their own firmware will be buying spyware from Amazon, though, so existing support is pretty much non-existent. It's only a matter of time before someone will take this opportunity to find security flaws in the software, which will no longer be patched, and hopefully you'll be able to use your camera again.
If you have the space, stuff it into your attic and wait, or get hacking yourself if you have the time. Otherwise, at least take it to a recycler to lessen the environmental impact of this crap just a tiny bit.