Hi, sorry we can not help you with that as it is a Developer issue and this forum is for end user Firefox for Desktop/notebook/pad : You can find out more by using these :

• https://developers.google.com/web/fundamentals/codelabs/push-notifications/

and through the links on this page :

• https://developer.mozilla.org/en-US/docs/Web/API/Notifications_API/Using_the_Notifications_API

Please let us know if this solved your issue or if need further assistance.

Hi Tsyklop, I agree it's a good idea to check Firefox Firebase documentation/support for any known Firefox Firebase issues. (https://firebase.google.com/support/)

You also could check your settings to make sure you don't have any modified notification preferences:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful.

(2) In the search box above the list, type or paste webno and pause while the list is filtered

Check these:

• dom.webnotifications.enabled (default = true)
• dom.webnotifications.serviceworker.enabled (default = true)

(3) In the search box above the list, type or paste push and pause while the list is filtered

Try right-click > Reset on any modified preferences.