No good for me
Even with the link there I can't upgrade.
I get an error saying my premium key is already in use
I had support delete my account as I was unable to sync from pc (different starting data in both)
Support then said to create a new account and reupgrade it with that link.
I've been email support for 3 weeks now, and get no response.
I've wasted over a month of "paid premium time" being unable to actually use it.