Hi Julie,
To start, I was wondering if you were running the latest version of LEAP (v 2017.0.9.0)? It is important to stay up-to-date as the newer versions include fixes that may resolve the issue you are having.
I am not seeing any obvious reasons for the problem you are having. Though I am sure you have done this already, please ensure that the correct data is selected in Excel when naming the list. Also, do not change the shape type after you import the data because this will reset the values.
After you are importing the data, are you seeing any values in the average value column, or does it import everything as 0? If you would like us to take a closer look at the problem, please send us the Excel file so I can try to import the data myself. To do this, either reply and attach the file to this post, or email it to leap@sei-us.org.
Thanks!
Emily