Listen Enpass what you're doing is called bait and switch.
You sell users lifetime subscriptions on a version of Enpass then add a couple of new features, change the name to Premium and then ask Pro users to upgrade.
How long before Premium users have to pay to upgrade the Premium Platinum Enpass.
Very shitty business model. You promised a lifetime subscription to Enpass then you renamed it to Pro and now you rename it to Premium leaving Pro lifetime subscriptions behind.
Give me my lifetime subscription money back and keep your crooked business model.