Thanks for that. Yes, I have seen that guide. My issue is that I have three out of five family slots working (one yet to be activated) with another one that just wouldn’t accept password/username. I have email set up on three devices all of which worked seamlessly last week but I haven’t been able to send email from any since Saturday. Likewise we set up all of the other email accounts and they all have the same issue. All can receive none can send. The configuration are all ok.
I will put in a ticket today when my family return home after the weekend. I will then try and resolve this by distance which will be much more painful with some people far less tech savvy.