We kept our promise and now you can use custom fonts on ad platforms such as AdWords.
All you need to do is to check "Convert custom fonts to SVG" option right before saving the banner.
What's that feature doing?
It's converting your actual custom font text into an SVG file and that will make your banner 100% Adwords compatible but also save some size space for the HTML5 package.
Obviously, this feature is only available if you're using custom fonts and its automatically checked by default but if you have a ton of text in the banner and you're not planning to use it on AdWords, you can uncheck it whenever you want.
However, please notice that right now you can use this option only for text boxes and not for buttons with a custom font but we're already working to change that and it's coming very soon!