The “contact support” chat functionality doesn’t work at all. My messages immediately look like they time out, since the little grey text under them says “failed, tap to retry” in less than a second after I send a message.
Also, pictures received generally never load for me. I’ve gotten one that worked after several app reinstalls and restarts of my phone. The rest never load and the loading icon just spins forever.
Both of these issues happen on wifi or cellular. iPhone X, 11.2