u’ll have to go to the hamburger icon while in the chapter, there dhould be two checkmark boxes at the bottom, hit the one on the left that says sum like multiple pages and make sure the one on the right is also checked off for better viewing. if u need further explanation, let me know :3
Open a chapter, on the top right, you'll see an icon with three lines (just above the "next/previous page" arrows). Click on that. You'll see several options. Click on "multi page" option. That should do it
I can't find the option to view all the pictures of a chapter in the same page and scroll...