Like it on Facebook, Tweet it or share this question on other bookmarking websites.
We cannot bind a membership for lifetime. The maximum time you can subscribe is for one year. Your memberships costs helps us keep the updates going without and break. After all your sites will be up-to date if necessary updates released every time.
If you do not need any updates, you need not renew the membership, you can continue to use the extension as long as you want. There is no restrictions attached to it.