The google pre-launch report has this message for 7 of 10 devices for the most recent apk of my app (version 0.0.6) - "This device could not be tested at this time. Please upload a new APK."
I've looked around but haven't found anything that gives me a clue as to what this message means. Could some of the test devices be down? Could it be an issue with my app - maybe something in the manifest?
<?xml version="1.0" encoding="utf-8"?>
<manifest
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.truthbetolddesigns.herotracker"
android:installLocation="auto">
<!-- Permissions -->
<uses-permission android:name="android.permission.INTERNET" /> <!-- Spell Links, Survey -->
<uses-permission android:name="com.android.vending.BILLING" /> <!-- Google Play In-App Billing -->
<!-- SDK -->
<uses-sdk
android:minSdkVersion="15"
android:targetSdkVersion="26"
tools:overrideLibrary="com.travijuu.numberpicker.library" />
<!-- Screens -->
<supports-screens
android:resizeable="true"
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens="true"
android:anyDensity="true"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true">
...
</application>
</manifest>
The previous .apk (version 0.0.5) had the issue with 1/10 devices, and that was when I added In-App Billing and made it available to all countries outside the US, so could that be an issue? I didn't have this issue before (versions 0.0.4 and before).
Any thoughts on what's causing this error message?