Please forgive me if this has been answered, I searched but couldn't find another post.

I earned two free nights during MegaBonus and am going to use one later this month. For the life of me I can't figure out on the website how to book using one of them. The options come up for booking with my points but not with the certificate. I've looked every possible place I can think of, I can see the awards under My Account, but there seems to be no way to redeem them.

I'm a recent Hilton convert so I'm not as familiar with the Marriott website. I appreciate any help, thanks!