Help, please. Completed Projects not registering as completed assignments

I have assigned my students projects like "what's for dinner" in computer programming: intro to JS: drawing and animation.

I can see the projects have been completed on their computers. I can also see their projects in my account, within the class under "projects".

They, however, do not show as completed assignments. I can see they show as completed projects on each student's computer while they are doing the course work. While they are looking at their assignments, though, the assignment itself is not marked complete. This is only happening specifically with projects. Other course work is marked completed with no issues.

I thought it may be because I (or someone else) had to evaluate them, however they do not show as needing evaluations when I click on the project or when I use the sorting button for projects needing evaluations.  I should probably note I have passed these projects and I am able to evaluate other random user projects.

Is there something I am missing?

I recall something about child accounts not being able to evaluate projects when I was completing the coursework myself. I am now wondering: is this happening because they have child accounts and are therefore restricted from evaluations?

Is there, perhaps, a way for me to manually mark an assignment complete?

Thanks in advance for any insights.