Eufy Cam night vision not working?

Hi everyone.

My Eufy Cam is around 5 months old and all of a sudden its night vision was stopped working. I’ve cleaned the camera itself, turned the setting on and off, but I can’t work out why the night vision isn’t working.

My front yard Eufy Cam night vision works fine but the other camera is playing up.

Has anyone had this issue before or got any suggestions? Thanks.