Particular app just won't download to iPad on 14.2 Public Beta

I purchased the new Twitter client Aviary. It downloads fine to my iPhone running the latest iOS 14 non-beta release, but on my iPad Pro running 14.2 Public Beta, it won’t. I touch the cloud and arrow icon, I get the “thinking” spinning icon, and then it just reverts to the cloud and arrow with no error message.

It only happens with this app. I’ve tried rebooting, logging out of the App Store, and logging out of the AppleID completely.

Anyone else seeing similar behavior?

I am not on the public beta but it works for me on the iPad OS v14.0.1.