tenfoot
I update manually and have my studio pc offline. When my membership rolled over recently Sonar went into demo mode. I installed the new ccc, briefly connected to my wifi and launched sonar through ccc and all was fixed. Could you use your android phone as a hotspot just to allow CCC to connect and launch sonar?  It is very quick will only need to be done once.

Unfortunately, my junk straight talk service will discontinue if I tether my phone to my computer. Good idea though.

pwalpwal
https://www.cakewalk.com/Support/Knowledge-Base/2007013384/Offline-Activation you didn't explicitly state you'd tried these instructions?

Yep. Did all that. No luck.

I'm online so can't really offer any suggestions, but, if you log onto your CW account through your phone, does SONAR read as activated there? 

Hi Steve. It says my membership ends on February 5, 2017. Thanks for trying.

Leadfoot
Hi Steve. It says my membership ends on February 5, 2017. Thanks for trying.

Ah, then your membership sure sounds like it's intact!   Odd one...

UPDATE:
Thanks to Dean Capper and all the awesome support staff at Cakewalk!!! After sending those guys on a wild goose chase for 3 weeks, it turned out that my stupid android phone was corrupting the authorization file. It's up and going now. Thanks so much to Dean and the rest of the crew!