Why isn't my Studio Theme checkout functioning properly?

I have tested my Check out before but recently it is not working. The Shop Pay and Paypal buttons are working but the checkout at the top is not. It is not even offered on the mobile version.

The website is www.ArtbyLizz.com.

Hello , @lizzarm

The store is password protected , can you please provide storefront password ?

Thanks @jaydeep_312 . The password is artify

Have you been able to resolve this issue? Currently having the same issue.

Thanks Jess