Colors not being saved

Hi Site Origin!
Premium user here and happy with the results!
However, the first thing I did when my premium account was activated was to fiddle with my menu color options… I can see the preview just fine! and when I see everything how I want it I hit “save and publish” However when trying to close the formatting page I get a warning that all of my changes will be lost If I leave said page…

Long story short, Im not able to save my customization settings… any Ideas on where should I start?
thanks!