My name is*****'m a certified computer professional with 15 years of experience. It would be my pleasure to assist you with this. the first thing you need to check is that each device has the latest update for the operating system. The latest updates not only allow for messages to snch across devices, they also allow test messages from non iphone users to be shown in the messages center. Do you know how to update the devices or do you need help with that?
I apologize. I missed that in your description. I generally start at the very beginning so as not to miss anything. I will open your question up to other experts in order to get you the fastest service, as I am currently tied up with helping another client . Have a good evening.
Hi there and welcome
Can you do the following please
On iPhone, closed the Messages appSigned out of Apple ID (Settings>Messages>Send&Receive > Tapped Apple ID, Signed out) Turned off iMessage using the toggle switch (Settings>Messages)Turned back on iMessage using toggle switchSigned back in Apple ID
Do this on all your portable devices and then tell me if you start receiving them