There could be a few things causing this issue. The first thing to check is that the file you uploaded actually contains data! Make sure that you didn't accidentally upload an empty log file.
The next thing that I would check would be to see if you have the correct company selected so that your info is visible. Try selecting 'All Companies" from the drop down menu.
Finally, the issue might be due to the time period of data that you are currently viewing. You can change the time period by selecting a predefined period, or by creating a custom one using the calendar selector functionality.
If you still can't see your data, contact support and we'll help you figure it out!