Apps not installing on iPad

Apps not installing on iPad

I've finally enrolled an ipad in our Mobile Device Manager Plus through ManageEngine's Apple Enrollment. I can see the device under Device Mgmt, but I can't install apps on it. 
I'm going to Device Mgmt, then Groups & Devices - Devices - click on the three dots on the right of the ipad. Distribute Apps. If I click on "Distributed Apps" I see the app listed under "Distributed Apps." But if I go to the ipad itself, I don't see the app listed. I DO see it on the iPad under App Catalog, but I tapped "Install" and it has been stuck "Installing" for hours now. Am I doing something wrong?

Thanks.