Installer asking for username and password

Hi folks
I have just installed Litecart for the first time. 
I am using 1&1 shared hosting.
All seemed fine until I tried to go to admin from the install screen and then a message popped up asking for my username and password - see screen grab attached.
What "username and password" do you think it requires .... and any ideas why it's asking this?
Thank you!
BRYAN

The installer page should not ask for a password unless you clicked the link to the admin dashboard. Then it's the admin password you should use given on the previous page.

Thanks for that! My bad :-)