Oh, I see.
Well it would be the same concept - Allow notifications from said app,
Google said: Go to Settings > Apps > Safari > Advanced > Feature Flags and turn on "Notifications"
If this is on, then idk.
Tried it, as already mentioned, that's why im here.
Tried it in safari, it said Error: TypeError: undefined is not an object (evaliuating 'window.Notification.requestPermission')
and in the home app the hint: Your browser denied permission for notifications. Please allow d2jsp.org to notify you in your browser settings.
I tried a device restart now, still now change. Dunno what else to test. Does it work for anyone with the same iOS Version?