Oh, okay, so you mean you're worried because your pages are designed for a more traditional print format and not the 'webtoons' panels stacked on top of each other with a lot of white space dealie? I don't think it's an issue for most readers. My comic designed with print in mind so the pages look like regular comic book pages and no one on Webtoons has mentioned it.
There are some people who reformat their pages specifically to post on webtoons so they have that more spaced out feel by taking their comic panels from the page format and placing them on a longer canvas, if you feel like putting in the extra time.