Hey Sean,
Mark : Your logo would only appear if we did not specify an image when pushing out notifications
What my colleague Mark mentioned is correct, if the person subscribe OneSignal notification on your site, it will push a notification to the new subscriber and show your default icon image as well, you can check my attached screenshot below.
I think I am still not understanding something then. Whose profile picture are you pushing out?
It will show that person avatar who like or comment on your status.
For example :
User A comment on User B status, User B will receive the notification then this notification image will show User A avatar.
When I set up the profile at OneSignal they asked for in image which we put in.
I had assumed we would be able to set up an icon that would be displayed on all of the notifications.
Nope, that default image icon will only show if the notification do not have specify any image.
For Easysocial, it will always pass in user avatar image into OneSignal notification.
If you would like to set only show your default image icon, you can modify on this file ->
JoomlaFolder/media/com_easysocial/apps/user/onesignal/onesignal.php