Problems with font color coming soon page template

I’m using Astra theme and I have a problem using the BB template for the coming soon page. When I change the color or size of the font (headings or normal paragraph) at first they change, but one I save and publish the color and size of the font switch back to what it was before. The BB plug-in is up to date and I have no idea what is going wrong here.
Please help.
Thanks