Thanks a lot for reaching out and I'm sorry about this. I've had a look into the account and can see that this stems from when you added Plusnet Call Protect onto your line. For whatever reason, automation did not place the orders with our suppliers to change the line features, so the change became stuck.
I've just manually processed these changes, which should complete by the end of the day.
Give it another go tomorrow and let us know if you're still having issues.