Authenticating with SSH - unable to clone my repository

I have a website I'd like to work on - I wish to use Git and SSH to make the workflow easier. 

I imported existing SSH keys I use (with Github) using the InMotion guide.  These appear, both names as 'ida.dsa' in my 'Manage Keys' area (not rsa and rsa.pub as they are locally). 

When I try and clone my repository, I receive the following error (anonymized here for):

git clone ssh://<namespace<@<mywebsite.co.uk>/home/<namespace>/cprepo
Cloning into 'cprepo'...
ssh: connect to host <host>.co.uk port 22: Operation timed out
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

So the message is pretty clear but I can't tell if it can't authenticate due to keys issue or whether I need to SSH in with root access first.  I can't find how to get root access despite following the InMotion guide - I can't seem to find an option for 'Get Root Access' in AMP