Home App devices not responding

All of a sudden my devices attached to my Home App show as not responding. All the apple devices are accessible. The Bridges and apps for these devices (Wemo, Philips, EcoBee, and others) function as they should. All worked fine until yesterday. The only new device on the network is an Apple 4K Wifi only. The Home pod that Home App was set up on originally is the orginal HomePod. Hope some one has a solution out there.