Hey Ching,
There are a few things you can do. It looks like you have disabled our default mobile layout which would change the feed to a single column when the device is small. You can re-enable the mobile layout by going to the “Customize” tab on the settings page and scrolling down to the “Layout” tab and unchecking the “Disable Mobile Layout” box.
If you would like more than one column, you could go to the “Custom CSS” area on that same tab and paste in this code:
@media (max-width: 480px) {
#sb_instagram.sbi_col_6 #sbi_images .sbi_item {
width: 50%;
}
#sb_instagram.sbi_col_6.sbi_disable_mobile #sbi_images .sbi_item {
width: 50%;
}
}
This will create 2 columns but you can make it into three or more by changing the “50%” to “33%”, “25%”, or so on.