@JasonBreslau
Check the requirements for the app. If it has a requirement that it needs cellular, then it might not pass the prerequisite check.
Otherwise, be sure the device is connected to Wi-Fi and attempt to install it manually. If it works, then there isn't a requirement for cellular only. In that case, you'd proceed to check the properties of the deployment, make sure the device/user is in the necessary groups, etc.
Please like and mark this thread as answered if it's helpful, thanks!
