Web query does not work for USCIS' site
 

Hello,
I am trying to create a web query that imports data from the USCIS' site
(https://egov.immigration.gov/cris/caseStatusSearch.do)

For some reason, this does not work (no need to enter "Application Receipt
Number" -- just select something on the main page -- still does not work).

Any idea how to fix that?
Thanks:
Rossi