@Juanarcin
You might be better off contacting Support, you can use the link and instructions in this post in this forum:
https://www.googlenestcommunity.com/t5/Cameras-and-Doorbells/Using-Google-Nest-s-quot-Contact-Us-quo...
Depending on your locale and the time of day, you should get phone callback, chat, and email options.
When you removed the one camera from your account, did you also perform a factory reset?
With the floodlight camera whose battery won't remain charged, was the USB plug seated firmly in the bottom of the camera? Some customers have had problems with these newer USB plugs seating firmly and maintaining contact. Or maybe there's some defect in the floodlight fixture preventing continuous power to the camera; other customers have complained about the battery in their floodlight camera not remaining charged. (Otherwise, it should remain charged unless your floodlight camera is on a switched circuit that is not on all the time.)
My guess is that the battery camera that was part of your floodlight camera was somehow configured when it was shipped to work as a floodlight camera, which would account for how it is behaving when you removed it from the floodlight fixture. I have no idea whether removing it from your Google Home app and doing a factory reset would resolve the problem, because as customers we have no insight into how Google Nest configures the camera to think it's part of a floodlight fixture.
(We've had a battery camera for 23 months, plugged in with the optional power cable, and it's remained charged and "Live" the whole time.)
