Hi guavaberg,
If you are not receiving all of your messages on your Mac, ensure both Messages in iCloud and SMS forwarding is set up correctly by following Set up iCloud for Messages on all your devices:
- "In the Messages app on your Mac, do one of the following:
- macOS Ventura: Choose Messages > Settings, click iMessage, then select Enable Messages in iCloud.
- macOS 12 or earlier: Choose Messages > Preferences, click iMessage, then select Enable Messages in iCloud.
2. Select which email addresses and phone numbers you want to send and receive messages from on your Mac.
3. To see Messages stored in iCloud, open the Messages app."
If it is set up correctly and it still won't sync, restart both device and send another message in that group to see if it syncs.
Take care.