Background image + subscription form design problem on mobile

I’m having two minor issues but even after watching tutorials, I cannot find the core problem and solution so any help would be appreciated.

There are two issues that I encounter only on mobile:

  1. The background image is not fixed to the screen size and there is a white background color showing at the bottom. I would like the background image to be fixed and for the text to scroll independently.
  2. The subscription form has weird round edges, although the settings indicate a straight bottom line only.

I attach the screenshots of the issue below:

Here is the link:

Here is my site Read-Only: [LINK][1]

I don’t see this on my screen. Maybe clear the cache off the browser and try again?

Thanks! However, the problem persists on actual mobile devices (iPhone, on both Chrome and Safari) even after clearing the cache and browsing in private mode. Any further help would be very much appreciated.

Looking for a solution on this as well!