Since the 32 bit version does not install directly from C3, there had been some concern that the license might not renew properly.
Well, my second payment was acknowledged by email from Cakewalk on Feb 21.
Sonar sailed on, no prompts, hiccups, or other unsavory behavior.
My machine is online, and the process happened quietly in the background.
If your DAW is offline, your experience will be different, but I suspect that most people who can afford a dedicated DAW would not be likely to opt for the payment plan.
Anyhow, I just thought I'd share the good news.