Imported Parabola settings resizing header

Hi,

I’m currently having problems with the header on my site. The site has been using the Parabola theme with a correctly sized header until I was conducting some testing to troubleshoot a plugin problem I was having. During my troubleshooting, I exported the theme settings, changed the theme to the WordPress default, and when I was finished testing, I re-imported the theme settings I had exported earlier. Everything seemed to go back to its original state except for the header. It now appears scaled down to a fraction of its original size.

I’ve tried going to Appearance > Customize > Header Image to reset and re-upload the image and I’ve tried changing it this way in the Parabola settings as well, but to no effect.

Any help would be greatly appreciated!