Never in my life have I had something fail so hard. Love Apple but this is a terrible thing so far. Enabled iCloud Messages. iPhone has been "downloading" since it was turned on. Update my Mac to 10.13.5 and turn it on there, no issue. The progress bar actually moves and uploads/downloads my messages. My Mac seems to be the ONLY thing that is getting all messages. With iCloud messages on, on my phone - sometimes it shows as SMS and switches back to iMessage. My attachments for older messages have not downloaded, only a blank bubble. Recently as of early this morning, all messages are appearing on my Mac but not on my phone. Decided to swap back to my old iPhone X and do a restore from iCloud to see what happens. Half my messages are missing. Most are way out of order conversation wise and I STILL have "Downloading Messages from iCloud...". What the actual F! This is the stuff that really aggravates me to no end. I should NOT have turned this on but I trusted Apple. There is no clear documentation on how this works. None. I want to know if there is a way to delete the messages from the cloud and have them re-uploaded from my Mac and synced back to my phone so that everything is how it should be. Is that even possible? I have conversations from people no longer among the living that mean a lot to me. I do NOT want to lose them.