[Plugin: Instapress] image size in widget not working

my url is https://www.seaofghosts.com

Hi,

did you probably check the “Disable width and height attribute for images (e.g. for responsive layouts)” option in Instapress settings?

If you did so you need to add some CSS code. For 200px wide image this would be as follows:
.instagram-image img
{
width: 200px;
height: 200px;
}