Worry not…you’re legacy. That archiving message is for new purchasers going forward. (You’re not the first to comment on it.)
I’m not sure whether they will retroactively credit the $14.99 this far out, but you can still get a hefty discount…They are currently running a Black Friday 50% off special for everyone who wants to sign up for Premium…so you can get it for $25/month instead of $50.