

MLS will eventually be included in all messengers.
It was initially introduced by Wire as an RFC, but they fumbled the federation by making it an enterprise only feature. Because of that, other messengers will do the federating for them. iMessage, Google Messenger, Matrix, and Germ DM (Bluesky) do or partly have it implemented.

Solar flares and even the occasional random neutron particle hitting your equipment can cause some weird issues. If its just a one time occurrence and it doesn’t happen again, I wouldn’t worry too much about it.