Hi all
I've had a nightmare the last 4 days but finally I've figured it out and hope this helps someone else so they don't go through the same pain I did lol.
I first merged both my email accounts together! Still wouldn't work
Updated Windows, Still wouldn't work.
Delete Everything Native Instruments from PC
I then created a new local user on my pc so its not using a Microsoft account and set up as administrator(I think one drive is maybe a cause with file installations)
I then went into command prompt but when you open make sure you open by Run as administrator
Type sfc/scannow
Let it run and then restart pc
Turn all virus software off
Install Native Instruments
Install software.
All my products have now activated and downloaded full versions
This worked for me and hope if anyone else has the same problem this will also work