I use WiFi calling at home as bad signal in the house. It has stopped working I think possibly since update yesterday. Have been through all the suggestions on the support bot but still not working. Driving me mad anyone else had this problem?
One thing we've not tried is safe mode. Long Press your side button so the Power Off button appears. Long press on Power button. Press the Safe mode icon. When the phone restarts in safe mode then please try the steps above again to see if the missing call preference option has come back.