In the next few days dBpoweramp R2022.8.9 will release, we are changing the way we license in these key areas, to better address the change of software licensing over the years:

One license will cover both Windows and OS X installs.
Licenses will be sold with 2 years of included software updates
Any purchases of R17 in 2022 (from 1st January) will automatically convert to R2022.x.x license with 2 years updates (from their purchase date)
The Power Pack will no longer be updated, it will remain at R17.7, it has been updated for 15 years after the last purchase.
The free version will also be retired.