Opening multiple tabs with firefox

When i enabled the feature to open multiple tabs, at first they appeared in my notification panel as well as showing on the bottom lf my screen that they were saved with an "open now" option. I uninstalled the app briefly and then downloaded again and now eventhough the notifications are enabled for firefox , when the multiple tabs option is enabled it only shows on the bottom of my screen now and won't appear in my notification panel. What should i do? Because i checked and the notifications are enabled for firefox so it should work. Any help is appreciated