Users of iMessage for the iPad, iPhone, or macOS may experience a problem where iMessage stops syncing and says “Syncing Paused” in the app.

These steps typically solve this problem:

iPhone & iPad

1. Open the Settings app.
2. Tap your Apple ID picture located at the upper-left part of the screen.
   
3. Tap iCloud.
   
4. Tap Show All.
   
5. Tap Messages in iCloud.
   
6. Make sure that Use on this iPad or Use on this iPhone is set to On.
   

macOS

1. Choose Apple menu > System Settings, then select Apple ID.
   
2. Click iCloud.
3. Select Show All.
   
4. Select Messages in iCloud.
   
5. Make sure that Use on this iPad or Use on this iPhone is set to On.
   

If these steps didn’t work for you, you may also want to try:

• Restarting the device.
• Ensuring you have enough storage space in your iCloud account.
• Upgrade to the latest version of the operating system (macOS, iOS, iPadOS, etc.)