Thanks, Paul. Another user here, and our IT Team spent time on the phone with MS working through it on Monday and Tuesday, also... making their way through the "chain of command" until it was worked out too. 


Yes, it did seem there was an issue there that was affecting everyone, but has now been sorted, thank goodness! It's been a learning curve for us all. It just happened to 'happen' as we were rolling out across our Prep-12 College - after a small team of us had been trialling it for ages, with no issues! 


It's always the way!


Thanks again, for updating with your experience too. It's helpful to know it wasn't just us!