Missing Texts in Messages on Mac ( Computer )

Richie Arendsee wrote:

Irrelevant - the message shows up on my iPhone, this is how I know the latest upgrade ( MacOS ) is not working

Last week these TEXTS showed up / mirrored in both locations ( a functional requirement I have )

( I would assume it is from a computer itself, ie bank )

It's not irrelevant as your computer is not capable of receiving SMS messages unless it is properly paired with your iPhone.

See here:

How to forward SMS/MMS text messages from your iPhone to your iPad, iPod touch or Mac - Apple Support

And yes, sometimes it comes undone and you have to set it up again.

If you would have said you only receive messages from iPhones I would have replied with:

Make sure SMS message forwarding is still set up

How to forward SMS/MMS text messages from your iPhone to your iPad, iPod touch or Mac - Apple Support

Make sure you read the *

* Don't see the Text Message Forwarding setting on your iPhone? Go to Settings > Messages, turn off iMessage, turn it back on, tap Send & Receive, tap Use Your Apple ID for iMessage, then sign in with the same Apple ID used on your other devices.

Is it possible you have more than 5 devices on the same Apple account?

When I installed a new iMac last month, I had to deactivate ALL my devices and reactivate just 5.

I had never deactivated 4 older devices (iPhones, iPad and two other computers), even though they were all shutdown.

Are the missing messages from non-Apple phones?

It is relevant since sometimes a Mac with will lose message forwarding which gets a message from non-iPhones to a Mac and prevents a Mac from sending messages to non-Apple iphone.