iMessage won't cooperate between devices

[rainbowcat]

iPhone SE on iOS 18.3.1, with sharing iMessages enabled for all my Apple devices. Except it doesn't happen. I have texts on my phone that refuse to show on my MBA at all, and will show up on iMac days later after I've deleted them from my phone. Oddly, texts show up on my iPad immediately. What am I doing wrong please? TIA

 

[MacInWin]

If all of the devices are logged into the same AppleID account, the messages should sync. You can try logging out of AppleID on each device, then back in on each device to see if they sync.

BTW, it's not "iMessages" anymore. It's just "Messages."

 

[rainbowcat]

Thanks! I shall drop the "i"!

 

[Slydude]

While you are making sure you're logged into the same Apple ID check the settings for each device. Each one should have a series of settings that dictate whether data syncing is off or on. The devices that are working will have settings that are turned on for Messages. For the device that isn't working properly make sure that syncing is turn on for Messages.

 

[rainbowcat]

Thank you. So I need to have "Enable Messages in iCloud" on my MBA? Logging in and out of Apple ID didn't help.

 

[MacInWin]

Thank you. So I need to have "Enable Messages in iCloud" on my MBA? Logging in and out of Apple ID didn't help.

Yes, on every device the Messages have to be in iCloud to be synced.

 

[rainbowcat]

Thank you. Somehow RSC got disabled during an update, and that made a difference too.

 

[Slydude]

Thanks for letting us know. The only reason that occurred to me is that I had one of the settings get changed somewhere along the way. I don't know if I accidentally changed it or it got changed after an update.

 

[rainbowcat]

Thanks to everyone for taking the time to help.