For Blink Personal users, what about an option to either specify the date that you want the license to run from, or a field to enter your existing licence number and have it automatically start the licence from when the first one finishes.
I'm guessing that Blink Professional users don't have this problem because they can either extend the life of the existing licence key, or get a new one via the customer portal and then push it out to all clients using some kind of management console. But I can't buy Blink Professional now, since the option to buy only 1 assett has disappeared and the smallest number you can get is 10!
But us "Personal" users might not want our security to lapse by waiting until the very day the licence expires before buying the next one (and risking a delay in receiving the new code), nor do we want to buy the next subscription while the old one still has a few days left and thereby "waste" those few days by having the subscriptions overlap.