Why won't my Apple TV 4K connect to my wifi even though it shows that wifi is connected

Why won't my Apple TV 4K connect to my wifi even though it shows that wifi is connected? Suddenly happened even though I've been using this wifi at home & no issues until yesterday. Now, my iPhone won't connect to the network, BUT my MacBook Pro DOES CONNECT TO THE SAME NETWORK. Anyone ever have this happen to them before?