Copied from another thread:
If you complete 12 months you own SONAR up to the last month you paid. So if you don't make a new payment and want to continue to use SONAR, you will need to roll back to the last month you paid for.
This only applies to users who are on the monthly payment plan. If you purchased an annual membership it is always fully owned for that annual period. For a lifetime user it is owned
forever and includes future updates.
Hope this makes sense.