N400 Application Payment Issues

Summary

If you encounter issues with the online N400 application payment, try clearing your browser cache, using a different browser, or contacting USCIS for technical support. If the problem persists, you can mail your application and fee to the USCIS Phoenix Lockbox.

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I have finished my online N400 application for Naturalization but when I submit and pay, I could not have access to page for paying many times in many days. How can i solve this problem? Thanks.
Hello Anna, I'm sorry to hear about your issue. You should try the following:
- Clear your browser cache and cookies.
- Try a different web browser.
- Contact USCIS at *-*-*-* for technical support.
Please note that it's important to ensure that your payment is successful to proceed with the application.
It's really difficult to call USCIS that take very long time to wait for. Are there some other ways to contact them such as email or mail...?Thanks.
Yes, Anna, USCIS provides a few options:
- Email: USCIS.Webmaster@uscis.dhs.gov (technical issues)
- Mailing Address: USCIS, Attn: Military Help Line, Box *, Chicago, IL, *-*
- Use "Ask Emma" feature on USCIS website for general queries.
My last question: even though I prefer to file my application online. But in case the problem of paying online continues, may I leave my online doc. and submit my application and fee by mail? In this case, which USCIS office I will mail to? I am now living in North Carolina. Thanks so much for your time.
Yes, Anna, if you're unable to resolve the online payment issue, you may submit your application and fee by mail. You'll need to mail your application to the USCIS Phoenix Lockbox at the following address:
~USCIS Phoenix Lockbox
Address: U.S. Citizenship and Immigration Services, Attn: N-*, * E. Skyharbor Circle S, Suite *, Phoenix, AZ *