Who I have the same questioned this topic

Ever since the last few updates to the message + app anyone on my account cannot send or receive messages to each other unless one of several things is true...

Both my wife and I have to do one of the following in order to send/receive each others messages:

1) Both have data and wifi turned off.

2) Both have data on.

3) either of us have data or wifi on, but wifi has to be connected to a legitimate network.

If I have data on and my wife has wifi on, but her phone is not actually connected to a wifi network, she won't receive my messages, but I will receive hers.

I have tested this multiple times and have seen countless posts that also verify the same issue.

this is an app problem and it needs to get fixed NOW!!!