Background image not loading when using section URL

Site URL: http://www.gatherist.com.au

Hello.

I'm using SS v7.0 - Brine Family (Walking Rovers template) and I have an issue with my homepage (a stacked index page). The last section on my homepage contains a background image with a newsletter sign-up form on top.

I want to add the direct link to this newsletter section to my IG bio but when I type the direct link (www.gatherist.conm.au/newsletter) into my browser, the background image won't load so there's just a white background. I can partly see the sign-up form and button but it looks rather odd without the actual background image.

I've tried this with every section on my homepage and the background image always fails to load when typing the URL for each section directly into the browser window. If I type just my web address (www.gatherist.com.au), the background images all load perfectly. I've tried multiple devices and browsers but get the same results.

Does anyone know how to fix this issue?

Thank you very much.

R.