Trouble with creative cloud manager

I want to trial and probably pay for Lightroom/photoshop CC.  I currently have lightroom 6 but want to incorporate photoshop.  I obviously do not want to remove lightroom 6. 

My initial problem was that i was trying to install photoshop from the website but the screen stuck at "downloading" and did not download / install anything.  I assume that it was trying to install the manager which i already have... is this correct?

So i tried to open my version of CC Manager and it wants to update.  I tried to update and install, but every time (at least 6 times!) it starts it but just quits at about 80% ish completed.  Then when opened up again it asks to update again.  I cannot see any apps in the CC Manager.  Does that mean that there are no apps installed or is it just because it wont let me look because it wants to install the update?

Should i uninstall CC Manager? Is it corrupt?  Should i uninstall it using the cleaner?  I have no idea what to do and find it very difficult to find help to be able to point me in the right direction?