Hello @mggroupsolutionz,
To receive support and updates for plugins and addons, you must buy WPDM Pro annually. You will be able to continue using what you have, support and update will be blocked after the subscription expires, it will work fine as long as it is compatible with the active WordPress version. But we don’t have any warranty for that for the expired orders. It is the same with the special pack.
However, I would suggest you to buy the special pack as you will get many addons of wpdm with different functionalities.
WordPress Download Manager Special Pack
Once you have purchased the package, you must notify us if you do not wish to renew automatically.
Thanks