Wix site doesn't fit screen on webview application

I created a webview application that takes information from my website achordapp.com
the frame doesn’t fit %100 of the screen and the problem is in the wix code (I tried to display another websites and it worked)
is there any options to edit the site to match %100 of the screen? (in mobile editor you work most of the time with 280px width.

Thank you!

See if this helps. I have posted the solution I used in my case.

The issue is finally solved after much research here is the tutorial for that ;