title: Set new upload key for app in Google Playstore without "App signing"
body: <p>I need to update an existing app in my Google Play console, but the key to sign the APK is lost. I am not sure if I can fix this at all, because the feature &quot;app signing&quot; is not activated for this app.</p>
  <p>My research showed, that I should activate &quot;app signing&quot; and then it would be possible to upload a new key, but it's not possible to acitvate the &quot;app signing&quot;, because I would need the old and lost key for it.</p>
  <p>Is it possible to contact the Google support or does that only help, if &quot;app signing&quot; is activated?</p>
  <p>Please help me! Thank you.</p>