First off, I would like to thank Graph Paper press for making this theme available for free. It is clean and precise and I am purchasing another theme for a video project.
My current issue is that I am unable to alter the thumbnail, once the image is uploaded.
I am choosing a selection of 310x150 to be applied to the thumbnail, however the save button remains greyed out and I am unable to click it.
This is a recent issue, as I have been able to successfully perform this action in the past.