I’ve been using Twilio for about 8 years now, mostly for work use cases but have used it for SMS notifications on my HE for the past 3 years. I haven’t experienced what you are going through but I also haven’t setup an account in a while either. Personal account support is via email but hopefully the number that @JohnRob provided works.
The stock Twilio driver is based on a community one I put together 3 years ago. I have since added additional features like voice. Wanted to throw this out there in case you might find these additional features useful:
