Cannot change Chime ringtone

Hi,Today I found that I could not change ringtone on my Chime (the original version, FW version 1.3.3).I control Chime via the Ring app on my Android phone (app version 3.22.1). When I select different ringtone, hit "Save Changes" I get the confimation about settings being updated. But the Chime light does not start blinking and when I test sound the default sound is still there.I tried following:- Reset chime (via the pin hole).- Restart chime.- Re-install Ring application on my phone.None of it helped.Any idea how to fix this?Cheers,Mirek