I would also appreciate an update when a solution is found.
After noticing MWB has not actually been running for the last couple of months, and being unable to open it, I reinstalled and spent many hours trying to find a solution for why I couldn't activate the licence, before finally stumbling across this post. I run a VPN (Astrill) which I suppose may be causing the conflict, because MWB 3.6.1 works fine.
Uninstalling my VPN is not an option for me, because of the country in which I live. I would appreciate it if you would release a proper fix for this problem soon.