I visited Canada last year for 4 days by road. While leaving US I went through special registration process. While coming back I used my I-94 to enter. At the port of entry, i was fingerprited, photographed, and was interviwed under oath. It took about 30 minutes. After the registration, the immigration officer told me that i do not have to appear in person at service center for further interview after 30 days. So I did not go for 30 day registration. Now I think I should have done that because I got RFE for EAD about 30 registration. I am completely lawful in the country who never broke the law but I think I am in trouble. What should I do to deal with this. Should I write the facts to the USCIS's RFE? I badly need your help. Thanks in advance.