Constant updates

The last month or so SWGOH has been downloading a few MB(somtimes 26MB) each time I log on. And often downloading after each time I enter a new screen or enter a battle. My app is updated thu the play store and still this happens. This is fine for the most part but it starts to eat of my monthly data pool on my phone subscription.

I cannot play without it downloading either. Can't you change this to instead download in bulk when we choose so we can do this when we are connected to a Wifi?