Works then doesn't... OK, so after a little bit more time I now have it all working, encryption is enabled and now I can install apps remotely, should I wish to.
Where I "failed" last time was at the entering the password stage ....trying to enter it on the first screen where the login is formatted like "Windows10/Username" brings up a "waiting for unattended access confirmation" which fails, but clicking on the "access using PIN "option but entering password rather than PIN and all works fine.
Previously when I tried to work with encryption enabled I also got this message "Unable to connect, Another Connection is established. " BUT this time around I managed to avoid getting this error.
I'm fairly confident, it's all up and running just fine now, fingers crossed.