StoreHippo provides the provision to automatically send the push notifications. However, if you are looking for Cloud Messaging configuration, the following steps will help you enable Cloud Messaging for your Android app.
The Project Number is automatically assigned by the Google API Console when you create a project. Follow these steps for the same:
Copy the provided Server Key and Sender ID to your StoreHippo Admin Panel Mobile app record.
After you have received your API key and number, you can to add them to your store.
Go to the Mobile Apps > Mobile Apps section in your Admin Panel and click on the Push Notification tab. Edit the corresponding record and enter the data.