From your main solution right click on the WoWonder>> Properties >> Android Manifest tab >> Change the names as you like and the versions also depending on your google play last version if you have.
IMPORTANT : Also you need to change your Package name from the AndroidManifest file as bellow search for “com.wowondertimeline.app” and replace it with your own package name such as “com.Beatysocial.app” or “com.Myspacetimeline.app” you can choose any package name you like if you dont have yet any app submitted to google play
be sure to use this same package name during creating the onesignal account, the correct package name will activate your One-signal account on your device