Looks as if you have managed to resolve a number of problems with BT Premium email. I dont want to bother the help line as leave it to others in current circumstances.
I left BT Broadband last year and am a very old BTOpenWorld email user (Yahoo user). My email is @btopenworld.com but my 3 linked accounts for my wife and children are @btinternet.com.
I am trying to upgrade us all to Premium email but going around in circles.
In Manage your Email i dont have a link option to Upgrade to Premium.
When I use the link in Help to “Place an order for Premium Email here” and follow the steps using my @btopenworld.com ID, it says that the password i am using is not strong, when it follows all the required standards (letter, numbers, characters, >8 etc). [it also looks like BT has created an @btinternet.com email address for me, are these interchangeable?]
To cap it all off my families’ email addresses are now showing as ”due to be downgraded”. I thought i had linked these to my email which is showing “Active”.
I had a similar issue last year while trying to order premium mail. Following the link in the help section, I ended up trying to change my password on numerous occasions - which nearly resulted in becoming locked out.
In the end it turned out that I had to phone the premium mail team and they reset my account password after which I was able to use the link successfully. It is worth noting that not all members of the premium mail team seemed to be aware that this was the issue.