If you bought a license for Sticky Password prior to December 8, 2014 (Free licenses given away at GiveAwayoftheDay, BitsDuJour, etc. do not count, unfortunately.). Just keep your current version installed & download
and install the latest version of their software from their website.
The next time you are online your license will be upgraded to lifetime and you'll receive 3 one-year premium licenses emailed to you for family and friends.
(Good news for Pale Moon users. The 32-bit version of Pale Moon is now supported by Sticky Password.)