Apple TV Homekit hub remains on Standby and doesn´t connect

I have my Homekit devices using an Apple TV HD (4th generation) working as a Home Hub. Recently after the latest upgrade both on my iPhone and also on the Apple TV, it became stuck in Standby within the Home app. I tried solving it by connecting additional Home hubs with iPad but the result was the same; all Home hubs were in Standby. Also reviewed the Home app on other family iPhones and iPads with the same result. Please any hint as to solve the issue an get the Apple TV to connect again. The main problem, as you all know, is that now I cannot have remote access to my smart home devices.