@Elaine116 Like Gordon, I also experienced this issue a few years ago. One day I just stopped getting text alerts.
Of course the CS rep started out with ridiculous suggestions like "Maybe your text inbox is full" (duh, I 'm not that stupid) or it must be a problem with my phone provider, but after a few back and forths he deigned to actually consult the tech team, who confirmed that it was a problem on their end.
It took about a month to get my text alerts back, but I imagine it would take much longer now, given how their customer service has slid off the cliff.
At least you've been told it's with the techies now, so hopefully you'll have the texts back sometime in the not so distant future.