I recently purchased M9 plus. I tried adding one of them to my existing M5 mess without issue. I decided to switch the M9 as my main deco unit so I decided to delete my network. I decided to add my...

Recently I purchased M9 plus. Initially I joined 1 M9 to my network and it was ok. I tried deleting my network and adding all the Decos again. To my surprise I can't join the M5s. I have a router...