Pages Not Showing Up Under “Parent”

I’m setting up a new WordPress site at

https://danacoopermusic.com.sitemason.com/wp

HOpefully that URL works… I’m in the middle of re-assining the DNS.

I’m using a theme called “ModiOne” – not the easiest theme to work with (written in German) but the one my client likes. I don’t know if maybe that’s part of the reason I’ve encountered an issue.

I have created pages in the menu bar across the top of the page; Now I’m trying to create sub-pages under the “parent” pages, but the sub-pages are not showing up under the “parent” heading in the menu.

Specifically, if you look at the site, the issue is under the “music” link; I’ve created a page under that for an album that is not showing up under the link.

Is there something else I need to do to activate the parent/page function? I thought it was automatic.

Thanks,

–PS