Is there a problem with DJI GO on the Play Store?
I have been trying to install it on my phone but it just says #Waiting for download#
It has been like that for an hour now.

Might be best to reach out to google on this one,  when you submit an app to the store you have no control over the delivery, its either available or not.

Hello AntonyM, thank you for reaching us out and my apologies this has caused you. For issues like this kindly restart your mobile device before trying to download the app. You can also try to download the APK version that can be found here: https://www.dji.com/downloads/djiapp/dji-go-3

Please keep us posted. Thank you for your understanding.

Update: I rebooted my phone and went into the Play store again, and it said the app was already installed. I clicked Open and it works.
Very odd.

It may be the device you are using?