App updates stuck in "installing"

I tried to update three apps on my iPad. I hit the "update all" button and my ipad showed "installing". They did not install. They are stuck in the "installing mode". I got a message that they could not install. I got my husbands ipad and tried to update one app and his is doing the same thing. I rebooted our wifi box and did a hard reboot of my ipad and my husband's also. The apps are still stuck with the greyed out "installing" button showing. It has been over three hours.

Any ideas?