I’ve recently acquired a Samsung Galaxy Tab A6 to use as a smart home dashboard. However, upon installing the HA app, I’m can’t get it to show me the login screen after I enter the URL. It just shows this:
What can I do to fix this issue?
turn of your WIFI on your phone ! or restart ur phone…your site is there …so please also remove/delete your picture again 
You are exposing your url !
check that android system webview is fully upto date in the play store
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This indeed turned out to be the issue. It’s fixed now, thank you!
A little late on this topic but have the same issue. Any idea on a Fire tablet without (an easy) way to update the android system webview?
So I had the same issue, however it looks like I’m on the latest version or maybe I just can’t update.
My resolve was to disable System Webview and it then started working.
@dshokouhi if you go to Setting → Apps and then open systems apps you should then be able to disable System Webview, you can always re-enable if it does not work.
googles own documentation goes against this advice
Very true, but it does work and as I only use my tablet for Home Assistant I’m not sure that it matters.