Karyn

Noel Borthwick [Cakewalk]
After completing 12 consecutive months of monthly membership OR buying an annual membership you own the product (i.e. it won't expire). After that point if you start a new membership cycle the process repeats.
 
Note that when you start a new cycle if its monthly, then you will be subject to the same expiration terms if you don't complete 12 consecutive months.  If you choose to discontinue with the new membership cycle for any reason however, you will still own the prior version you paid for so you will be able to roll back to it at any time.

BobF if you continue for another 11 months after the initial 12, regardless of how you paid for the initial 12, and as long as there are no lapses, you will keep all 23 months if you stop.  At that point in time, you HAVE paid for the previous 12 months.  By continuing beyond the initial 12 months you have a rolling 12 months of paid membership.

According to Noel, and also the way I understand it, you can not make 23 payments.
 
You buy a 1 year membership.  At the end of that year you can buy another 1 year membership.
You can pay in 12 monthly instalments,  then another 12 monthly instalments.  If you stop in the second year after 11 instalments, then you have not paid for the second year's membership as you agreed you would.