Logo on Social Media

Hi! My website is https://www.sweetnsourmom.net. Recently, when I go to share my site on social media platforms, the featured photo next to my site’s title is an image from the most recent article and not the actual logo. I’ve tried doing a few things but can’t figure this out. My logo appears on my website, but when I type in https://www.sweetnsourmom.net in Facebook, an article image comes up. Thanks for helping me with this.