White Series - Relay sound not working

Is anyone else having trouble toggling on/off the relay sound? I am able to do this with 2 of my switches currently. Holding up w/ 8x config clicks produces the cyan color and activates, and holding down w/ 8x config clicks produces the pink color and deactivates. FWIW, these two switches are being used in a 3-way setup (load switch + virtual switch).

For one of my single-pole switches (the one I originally was having a hard time pairing, until today – see my other post), I can’t seem to figure out how to make this thing produce sound. I can reset the switch & nothing sounds, I have it now paired in HomeKit & nothing sounds (not that HK is the key to making the relay tick), and I can try to enable/disable via parameter settings & nothing sounds. What gives? Are others experiencing this?