Video Doorbell Pro - Garbled 2 Way Audio -- Firmware Won't Update

I attempted to research this issue, as I am a techie.

It seems pretty clear that for those of us that have the issue with the 2-Way Audio on the Video Doorbell Pro, the issue was fixed in a firmware update, after removing the camera from your account, resetting it on the back, and then giving the doorbell 2-3 days to get its firmware update.  (FWIW my keypad took its update just fine).

This is the third 72-hour wait after trying this, and still no dice. Firmware is still at 2.1.9.50.  I don't want to unscrew the darn thing again, so I will wait longer, but this is truly ruining the functionality of the reason we chose a "Video Doorbell" over a plain outdoor camera -- so my elderly mother could answer the doorbell from her phone.

I want to wait for it to update the firmware before really evaluating its motion sensing capacity/range, but I can't even give an appropriate evaluation of that function when the main function is broken (and theoretically can be fixed).

I have hung a ping on the VDP on my home network to ensure that my router knows the device is active, just in case the firmware updates are coming down at a time when the camera's IP (which isn't requesting a "forever" DHCP lease like the base station, another issue that could cause connectivity issues) isn't active in my router's ARP table. (Many routers will drop the first packet of a ping request because a device isn't in the ARP table yet, and while if a system is that sensitive it's really not functional anyway, I figured I'd eliminate that possibility.

Average ping from cell phone on local wifi next to the doorbell to the doorbell (so two-ways through the brick wall blocking any 2.4ghz, cell to router to cam and back) was 11 ms.  Signal strength is fine.  Upload speed is insane as my ISP is ATT Fiber -- definitely not the issue.

After my last call with the Simplisafe people to document that yes I was having the issue still 72 hours after install, doing the reset so they knew it was done, and a rinse-repeat of that for the third time.... they said they'd send out a new doorbell if it still wouldn't take the update.  But that seems fairly wasteful if it is a firmware problem -- and won't fix it if it's my ISP blocking something it shouldn't be.

I know all good things come to those who wait, but frankly my mother isn't getting any younger, nor are her bones getting any less breakable.  She does not need to be trying to get up and get the door every time it's just a courtesy ring by a package driver, and until she can yell "Thank you!" at them like the Southerner she is (through a video cam if need be), she's going to break something trying to get herself to the door.  Yes, this may help her see if the person was just leaving, but doesn't help if it's a solicitor/etc.

Any suggestions on how to make your Video Doorbell Pro take the neat nifty update that makes it actually BE a Video Doorbell vs just a motion-sensing camera in a doorbell?