I've found the assistant, particularly the android app, to be buggy as all hell. Perhaps it's fine in the browser but as a heavy phone user I couldn't make it work anymore.
At least on iOS running the site as a web app works great. Also the iOS app works
I recently tried the Android App, and could not get it to function. But Kagi Assistant on Firefox for Android works fine.
Sorry to hear that! Could you please share a bit more about the issues you ran into with the Android app?