Unable to upload google 404 log

Hi I am on the 3 day trial and I have not been able to import my google log. I first tried to just connect my google webmaster account and thought this would automatically import my 404 log, but that didn't happen. I am now trying to import the CSV and I am following the directions but it is not working. How can I get some help for this? My tria is going to expire in one day and I have not been able to use this app to figure out if I want to keep it or not.