It works for me...
https://egov.uscis.gov/casestatus/landing.do
Make sure you are using English input and type your receipt number correctly. Another method is to create an account and then list all your petitions and applications.
https://egov.uscis.gov/casestatus/landing.do
Make sure you are using English input and type your receipt number correctly. Another method is to create an account and then list all your petitions and applications.