Hello Michael,

It seems certain browser, depending desktop/mobile which are no longer supported the web push notifications, you may refer the full list at https://documentation.onesignal.com/docs/web-push-overview

Thanks Sylvie

You're most welcome.

Just for your information, I have locked and marked this thread as resolved to avoid confusions in the future. Please start a new thread if you have any other issue in the future so it will be easier for us to manage your inquiries.

Thanks for understanding