Gen 2 Battery video doorbell

Battery Gen 2 lost WiFi about 12 hours ago, it will not re-connect. I use an Apple se 2020 phone or iPad Air 3rd gen.The Ring WiFi used on set up is showing ‘no internet connection’ I get the spinning white light ok, & audible message ‘ you are now being re connected’My WiFi connection is normal, 2 restarts of modem and signal booster have been tried.Message to Ring = waffle.Kinda stumped.The batter was 36%, now on charge.My other Ring camera has ok WiFi connection.