Help: App won't install/delete??

I'm on an iPad Air 2.
Trying to download an app but the app sorta in limbo.
Won't open when I click on it and it won't delete when I try to delete it.
I think it's completely downloaded. When I go to the purchased tab on the iPad, I see the app and I try to open it but nothing happens.

I've restarted the iPad, I've done the power /home button, logged off/in out of iTunes, but nothing
seems to work.

I tried and was still able to d/l more apps no problem.
It's just the one app and I'm stuck.

Help??

 

Thanks for your help.
Worked like a charm!

Thanks again