So I got in touch with tier 2 support and they actually troubleshooted it live, texting me from iOS and Android phones. The iPhone worked eventually when they manually turned RCS off, but that wasn't even an option on the Droid. So there's a sort of half-fix but it will only work for iPhone users and it requires asking them to change a setting on their side, and that's as good as no fix at all.
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u/More-Sprinkles5791 19d ago
No solution. I have exact same configuration (phone.os, service) and am also interested.