Author pic is not showing on mobile devices

I am using Sinatra theme for our website kilohecta.com which is working great, but with few issues. For any post, the author pic is not showing up on mobile devices. It is showing only on desktop. There are two places where this pic is expected. 1) In the Post Meta (just after the post title). 2) In the About Author Box (at the end of the post content). We have enabled it in the theme settings, and on desktop version, this pic is displaying correctly in both the places. But on mobile devices, the pic is missing.

Apparently this is probably intentionally done, but there should be some settings to enable/disable this behavior. We want the author pic to display also on mobile devices as our primary audience is coming through mobile. Any way to fix this please? Any help in this regard will be appreciated.

Thanks in advance!