So why is there a big, black, square button titled "Login to your Avast Account"?
When the big, black, square button titled "Login to your Avast Account" on the licences tabs in Premier Security and Clean Up Premium is clicked and the requested info completed it is retained over a PC restart. It is NOT retained over a PC restart in SecureLine.
Have you actually done the steps I mentioned earlier? If you had done the steps, you would have seen the GUI bug mentioned.
If you have not done the steps I mentioned to reproduce the (albeit minor error), then don't bother replying to this post.