SMS Texts Failure, Signals Not Received, Devices Won't Refresh

Is anyone able to explain how this occurs, and most recently, on a consistent basis?

I posted on Dec 8, that 13  "automatic test signals received" were not logged in the timeline of events for year 2019.
For year 2018, 20 of them were not logged in the timeline.

This year already, on Jan 6, 9, and 12, the signals were not received.  Interesting to note is that on Jan 9, when I checked at the regularly scheduled time it should have appeared on the timeline, it did not.  I checked again, hours later.  It appeared on the timeline the next day, with the date and time it was supposed to have appeared on the previous day.  I have never seen that happen.

Likewise, the SMS text alerts have been SNAFU'd....AGAIN (this makes I can't even count how many times over the last two years, and with SS2, it was a ridiculous crap-shoot).  The timeline of events on the online control panel show the events, yet I'm not getting SMS alerts for them.

On Jan 8, 9, 12, and 13, no SMS text alerts arrived for any event (arming, disarming).  The first day, the event alerts were late by two hours.  Today, 36 HOURS LATER, I received an SMS alert for an event that was for 36 hours prior.  I have twice attempted to "jump-start" the SMS alerts by going into Alerts, changing from Verizon Smartphone to just Verizon, but this only prompts for a verification code that never arrives on my phone.  When changing back to Verizon Smartphone, it sends a verification code, then alerts come in for about a day or two, then stop again.

Another issue of note:  I have noticed that when using the online control panel to refresh Devices - twice in about a week, it has taken much longer to complete (the spinning icon) - and you might want to check the little refresh button and the date and time beside it, because I've watched it supposedly be refreshed, but it actually wasn't (still showed last refresh date) - it takes two refresh tries to update it.

For the last two years, SS has been aware of the SMS problems, and eventually, they have numerous times said the issues were either being worked on, or were resolved.  Obviously, something is being missed.

My system is working fine, as far as I know - something on SS's side is not.  User-initiated tests indicate all is well, I get the call from Monitoring, so why aren't daily test signals showing up in the timeline and for the love of god, why aren't they logged every day?  I obviously have no control of this, it's a SS problem.  Combined with the numerous other problems that others have been reporting and SS's dismal support, I'm beginning to wonder if anyone's manning the helm.