Just completed a new site and when I exported out the code and uploaded it, the fonts are not loading properly. They are defaulting to helvetica instead of ubuntu that I had specified. For reference here is the webflow site http://bosworth-photography.webflow.com and here is the uploaded site: http://www.bosworthphoto.com/index.html
I had a similar problem with a Google font I was using: Source Sans Pro. It was uploading as gibberish ( weird symbols) so added the same font as a custom font and it worked fine. However, after a couple of days, I switched back to the original, non custom upload Source Sans Pro and it’s been working fine ever since. Have no idea why this happened.