Ring Android App on LG G4 Freezes

On the app for the ring chime pro, when I select chime tones, the app freezes. No list of available tones is shown and nothing on the page responds (including the back button). After as much as 10 minutes the list appears and the page becomes responsive. Clicking on the button to update leaves it hung in the "updating device" state (although it does look like the update succeeded). The only was out then is to kill the app and restart it. I spend a long time talking over the phone with ring support, who were unable to resolve this problem.