Learn More button is not showing up in preview

I have everything set up the way it’s supposed to be for my first FB ad, but the learn more button isn’t showing up in the ad preview. Anyone know why and should I submit for review even though it’s not showing up?

Never mind everyone I got it working. There was an issue with the URL. I’m leaving it here just in case anyone else has this issue. Just try re-entering the URL and see if that helps.