Most likely additional questions arose in preliminary review regarding your background or security.

You can attempt an expedited request with USCIS depending on your specific circumstances.

Yes you must disclose the arrest which may impact adjudication.

Your question is unclear. Could you please rephrase?

Contact USCIS to inquire about expedite processing.

You may withdraw the application once you have departed the US.

Your case will be denied if you miss an interview.

Consult with an attorney for guidance and review of your documents.

This appears excessive and action should be taken to move the case along.

File a FOIA request to request a certificate.