To set up your own FCM/VAPID ID and Key follow the following steps:
1. Create New Project on Google Developers Console
Head to https://console.firebase.google.com/ and create a new project.
*2. Click the COG icon and select 'Project Settings'
3. Get credentials
Select the "Cloud Messaging" tab in the navigation and then make sure you grab the "Server key" rather than Legacy Server key.
4. Add Credentials
Head back to your aimtell dashboard and then go to "View Websites" > "Edit" > "Advanced Settings". Once there, add your API or VAPID key and Sender ID into the corresponding fields. Hit save/update.
Congratulations! You have now successfully added your own FCM/VAPID keys!