I am applying my EAD, and got my receipt number ,

but every time when I tried to trace my status, it just showed that my receipt number can't be found. And I called the 1-800-375-5283, they told me they can't find my information on their system either. Does anybody know what happened? or I just need to wait few more days, since they need time to upload my information. By the way, my check was cashed last week by USCIS. Thank you so so much for your help!