Parallax Image On Mobile

Hello!

Great theme I love what can be done with it! So far I notice quite a few bugs in it. The first thing that I’m unable to figure out even after reading quite a few threads on the topic, is the parallax image on mobile. I purchased images according to another thread, image size is over 2600 # 2000px. The image on mobile looks very bad, I tried doing a few things with Jetpack to no avail. Please assist.
My website is http://lonestarorganic.com/

Thank you

I was told to post this question on another theme thread, not sure why. But, here is the thread, https://colorlibsupport.com/t/parallax-image-on-mobile/
I’m using the Shapely Theme. And nothing is working for the parallax image size. Can someone please help???
THANK YOU!

Any advice?