Hi there, @Majesty! This is the expected behavior when Changing a Chime tone or setting. The Chime device will save or update with these changes. Often times when a change is not saving or taking too long to change/ update, it can be due to connection. Please ensure the Chime is well within range of your router for a good signal. Check out our Community post for tips on optimizing wifi signal strength, or RSSI.
Please also check mobile device connection variables, including to make sure there is not a vpn enabled. I hope this helps! 