Product variant not displaying at Checkout

I added product variants to my Room booking in WooCommerce product, but the selected item in the variant option is NOT in the Cart page with the date selected. click on this link: https://www.sweetteabb.com/field.png to see item in red.

Do I need to do anything in addition to make this variant selection appear?

Thanks in advance!

The page I need help with: [log in to see the link]