Published html5 Questions display grayed-out "Next" button; Cap 7

Hello out there in Cap Land:

Has anyone experienced a grayed-out button in any Question slides, pots-publish?

This is a new one for me.

I have emptied cache, re-started, and looked for any "arrange" anomolies (there is no out-of-the-box way to bring forward or backward buttons on a Q slide that I can see...).

I have attached a pic of the issue.

If anyone has a solution, kindly post it for myself and other's sakes.

Thank you!