Use APKPure App
Get Skyline Messenger Wallpaper old version APK for Android
Awesome City Skyline Backgrounds for your Whatsapp Chat Background..
INSTRUCTION:
Open your-Whatsapp Messenger. Click on Menu-Button. Select Settings-> Chat Settings-> Wallpaper. Choose this app and set your favourit picture with the button in the middle.
Have much fun and thank you for positive feedback :)