Chime Pro v2 keeps flashing blue light

My Chime pro v2 had been ok. Now it has a flashing blue light and not connected to my WiFi. My WiFi is fine as everything else on it is working. In the Ring app it shows disconnected. I’ve followed instructions it reconnects but minutes later same, flashing blue light. I can’t find a manual to download. The one I did was a leaflet with “..use the app”. I’ve held down the button on the side and went though setup again by scanning code. Connected fine and now flashing blue again. Can anyone help please