Voicemail transcription stopped working

My voicemails are no longer being automatically transcribed. This feature just disappeared quite a while ago. Since disappearing, my iPhone is the same (12 Mini) and so is my carrier (AT&T), and I haven’t manually changed any settings having to do with my phone, so the only changes would be iOS updates (as of the date of this post I am up to date with the latest version). Old voicemails still have the transcribed text showing, and all research I have done hasn’t provided any solution that has worked (e.g.: just tap the voicemail and the transcript will download; make sure Siri is turned on). I have not contacted AT&T to see if they have stopped supporting this feature - does anyone know if this has happened? If not, and you still have voicemail transcription that works (especially if you use AT&T), what have you done to have it, and what can I do to get it back? Thank you.