In reply to Emanuel Daniel Inacio.

@Emanuel: Don't worry, Dorico 5.1.70 is a free update for all existing Dorico 5 users. Your Dorico 5 license is perpetual, i.e. it entitles you to use all Dorico 5.x versions forever. When a new major version is eventually released, you will be able to choose whether you want to update, but even if you don't update, your existing Dorico 5.x license will continue to work.