Unable to Link CarMax Account

I had my CarMax auto finance account linked in Mint for years. Then I noticed it has not updated in the last 2 months and is showing as inactive in my Mint account. I tried to update it and it asks to send a security code to my phone number via text or call. No matter which option I choose, I get a phone call. It says it’s Microsoft account authentication and says to complete my sign in to press the # key. I do that and it says it’s successful and then hangs up. But the prompt within mint is looking for a code which I cannot get. I can sign into my CarMax account directly and get the security code I need with no issues. Is this a glitch in mint?