Canadian with expired conditional USA green card but I-797c letter. Can I apply for NEXUS (I-751)?

I am trying to apply for NEXUS. I have Canadian citizenship with a conditional US green card (through marriage to my American husband). My card is expired but I have my I-797c (for I-751) notice letter already. On the application it just states green card and nowhere to put this letter's information. My status is extended for a year as PR, but the card is obviously expired.
Can I still apply or do I have to wait for my 10-year green card to arrive? Do I need to go into the office to show them this? I am very confused, any help would be appreciated.
Best Answer
All you need for your Nexus application is your A# which remains constant between all your green cards and is your USCIS number. So just enter that. For the expiration date, you can enter the extension date on your letter.
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What happens if conditional green card expires?
You will receive a letter from USCIS confirming that your status is extended by 24 months. You can use your expired green card and the USCIS receipt letter to prove you are allowed to work in the U.S. and travel outside the U.S. for up to 24 months after your green card expires.What if my green card expires while waiting for renewal?
If your green card expires, or is about to expire, while you're waiting for citizenship, you don't need to worry. The USCIS has created Form I-90 specifically for the purpose of replacing an expired green card.Can I travel with I 797c?
Can I Travel With I-797 Notice of Action? Yes, your I-797F allows you to travel to the U.S. if you are overseas. USCIS will send the form to your overseas address so that you may travel (back) to the United States.Can I get an extension on my expired green card?
Applicants may use those receipt notices as evidence of continued status for 24 months past the expiration date on their Green Card. Can I travel with the 24-month extension? Yes.Advanced Parole: Can I travel while my green card is pending?
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