You'll notice that when you add a story to either the 'reading now' or 'already reading' list, it'll give you the option to subscribe to the updates and get notifications. Switch any stories that you want to get updates on into one of those categories and you'll start getting updates again
Ever since I got some of my mangas back my notification doesn’t update, even though the manga has new chapters. Is there a way to fix it?
You'll notice that when you add a story to either the 'reading now' or 'already reading' list, it'll give you the option to subscribe to the updates and get notifications. Switch any stories that you want to get updates on into one of those categories and you'll start getting updates again