Hi PinkElephant,
thank You for Your answer!
The Chromebook-App is not updated any more, but the version for Android is up to date. On Chromebooks You can use Android-Apps like on a Smartphone, but the App has to released for Chromebooks. It is just a flag in the Play Store.
It would be great if i could use the same version on my Chromebooks as on my (Android-)Smartphone.
Yours
Flusskiesel