Ho to show two column related post in mobile

Hey,

thanks for reaching out and really sorry for the late reply.

You can usually adjust how to wish to display the related posts via the CSS box in the plugin settings.
To change the CSS for mobile showing in two rows, you need to add for example:
@media only screen and (max-device-width: 480px) {
ul.related_post {
width: 360px !important;
}
}

Let me know how it goes,
Petra