Does anyone have a solution for this? I'm having the exact same problem. I just got the Note Edge a couple of weeks ago. It's been fine up until two or three days ago. It started with my replies. I would send a reply text and it would show that it was sent for about two seconds and then *poof* vanish.
I'll get notifications in the edge panel, but when I go to view them they'll be there for about half a second and disappear.
Sometimes when I reply to messages, the message I'm replying to will disappear. It's only happening to two of my contacts.
I'm pretty diligent about deleting my inbox, so I don't think it's a "fullness" problem. Also, the auto-delete feature has been turned off, so it isn't that I'm over the limit or anything. I've tried restarting it. Doesn't help. I'm really trying to avoid a factory reset, as that's a last resort.
Is this a carrier issue or a software issue? My carrier is AT&T.