I now tried to do the same thing 3 times,
The exact same thing:
1: Share
2: Add to home page (As web app)
3: Open the d2jsp through home page.
4: Go straight to settings - push notifications.
5: Enable push notifications
-Third time it gave me the pop-up to "Allow".
Idk, Im 100% sure i did not do anything wrong the first 2 times.
1st time - I tried through browser (did not work)
2nd and 3rd time - I tried the steps above (Didnt work)
4th time - It worked......
Idk