addons not installing for CC 2015?

I've come across others with this problem.

I am using Windows 7 Pro and have Creative Cloud Desktop Manager installed and a paid up sub. to all CC2015 programs in the CC2015 suite.

I have CCDM running with sync turned on in preferences.

I go to Creative addons for plugin/extensions https://creative.adobe.com/addons/.

I choose my addon, I do everything according to the book. The addon manager tels me I have acquired the plugin/extension

NOTHING happens inside Creative Cloud, no activity stream. The downloaded plugins do not show up in the programs they are destined for!!

I went online to Adobe Help. For about 1.5 hours they could not solve the problem. It has been escalated.

Others with the same problem are reporting Adobe Help is no help on this one.

I have rebooted, exited CC, re-entered, tested  number of free installs (so I don't purchase something that won't load) removed them, reinstalled them . Nothing doing anything.

anyone any ideas?

Thanks