Sooo basically since I use chrome (I hope you do too)
There's this 3 dots on the top right corner near the page taps right?
When you tap on it you find many options like
-New tab
-New incognito tab
-Add tab to new group
And so on......
But ignore those, and check the top horizontal line where you'll see signs like:
1."<--"(back),
2 (bookmark),
3.(download). And then there's 2 more symbols but ignore those.
The 3. Option is use for downloading a particular page so that you can see it offline.
Now coming to the main one, click on any of the stories you want to read offline, tap on chapter 1. Wait for the chapters to load completely(like 10-15secs) then swipe the screen (keeping scroll down at once untill you see the end so that ull avoid spoiling yourself).
Now that you've reached the end of the page, do the steps i said above.
1. 3 dots on the top right corner
2 Tap on the Download option.
3. After the particular chapter is downloaded, check it to see if it's properly done till the end.
(If it is, no need to check the rest as it's just for confirmation)
Then it's done, keep doing this same steps to all the chapters you want to read offline.
(I always do this since I have a limited data per day by using wifi or hotspot)
All da best ;)

Does anyone knows how one can read on this app with no wifi