App problem – Google Tasks: Get Things Done Review

I can’t get it to download on to my home screen. When I’m in the App Store viewing the app, all I see is a cloud with an arrow pointing down. So I press on it and it presents a circle like normal, but it’s just going back to the cloud and arrow. I’ve checked all my home pages and it’s definitely not there? Any help would be appreciated! Thanks
Review by Taatmsl on Google Tasks: Get Things Done.