There is, and never was such thing as a lifetime subscription.
I completely understand your concern however I guess there were warnings starting over a month ago stating the release date was today, I guess some people don't browse the forums much but even so, if compensation was given, that would cause unfairness amungst refunds etc and more users would begin to demand refunds etc. I believe the free month would be more that enough for your compensation.
on a side note, nice update. I expected the delay however it seems necessary. Keep up the good work, and to customers: enjoy your free month, don't understand why you're complaining, that's too generous imo, would hate to expose the client from people overusing premiums for free :p