The security issue from memory is when you login for the first time a permission box appears asking if you give permission to talk to your computer, however it seems you have said no.
I'm not sure how you can get that message back to say yes!
You could take a copy of your QIF file, then when you get to the import stage as Nathan mentioned and browse to a folder for bank files on your Q drive, if you click in the empty space you can press CTRL + V and it will paste.
However you can't cut & paste with Premium - you will need to temporarily login as Standard. Which is when you may also get the popup message about permissions?