Applied for Apple Card under my legacy apple ID (@yahoo.com e-mail), but apple wallet only recognizes @me.com

I applied for an apple card, logged in using my legacy apple ID on a PC, got approved, but found out my apple wallet is logged in with my newer @me.com e-mail as apple ID and doesn't recognize my @yahoo.com apple card. How can I get my apple wallet to see my @yahoo.com card? Or do I have to cancel my @yahoo.com card and start over with my @me.com apple ID? How do I cancel my new apple card, then?