Refer to the reciprocity table for guidance as alternatives.

The canceled visa will impact the CR1 application depending on the basis of cancellation.

Yes this would impact visa issuance.

You would file the I130 application for your spouse after marriage.

Best to discuss this matter with the services that issued funds.

Yes you may do so without impact for subsequent application.

Selected as the best answer

This can be amended and included at time of interview and you should provide proof of resolution.

Yes it may take 2-4 months for biometrics to be scheduled and could be longer.

This is a serious matter and you should consult with an attorney for guidance.

You may file the N400 in July 2021 while the I751 is pending.