Besides technical difficulties, unclear on what I really get, statements from the vendor around honoring my purchase in the medium future "changes to their subscription plans ... The AppSumo offer states "Lifetime access to LongTailPro", meaning you will have your Longtailpro cloud access indefinitely until the day you explicitly request us to cancel or delete your account.

All tools, functionalities definitely require a monthly subscription to continue usage."

Maybe it is just bad messaging, but my confidence that I can use and not only access old data in the future is low. As the company explains why they "accomplished" it before, maybe with good business reasons,

When I unlocked my account I get the request to immediately select my plan:

Your plan (after 8 days trial)*You won't be billed until after your trial. You can cancel anytime.
Annual Starter $297.00S
Annual Pro $537.00
Annual Power Pro $694.00

This maybe an error in the system, however, reminded me of reading that the vendor has denied the usage of the system before.