Spotlight Camera issues

I have three spotlight cameras in my property and and three are showing the same issues. First of all the device health check will not update and is stuck on 13/7/2020, when i open the app the cameras do not load a live view snap shot and once i open the live view it drops the wifi. All has have good connection. It’s starting to annoy me! The doorbell cam on the same system works perfect. I have a floodlight cam in another property which works perfect too.