Hi, Bones_07_63.
I'm glad you decided to reach out on Apple Support Communities today. If I understand correctly, you’re not receiving the FaceTime calls from the nursing home on your iPhone 8, and you need to find a resolution. I certainly understand how imperative it is to be able to stay in touch with your loved ones remotely, and I am more than happy to help you get connected with your mom.
The first thing I would do is remove that spam contact from your blocked numbers. If you have an app set up to filter spam calls, you might try removing that for now as well. I would also make sure that you don’t have “Silence Unknown Callers” toggled on at Settings > Phone as outlined here:
Detect and block spam phone calls
If this doesn’t resolve the issue, can you outline the suggestions have already tried that you referenced in your post and give more details about exactly what happens when the nursing home tries to call? I don’t want to ask you to retrace your steps.
Cheers.