www.wysiwygwebbuilder.com

I have two questions:

I set a border around a Flexgrid in two breakpoints: and Default and 480 px. The border is a style image taken from the Gallery. It works OK in the default breakpoint, but in the 480px breakpoint it is not shown. Changing it to a solid border does work.

I use the font "Bradley Hand ITC" on some pages. It shows ok in the design phase, but it does not show after uploading.

(WB15)

To be able to help you with the border, I need a demo project so I can see all your settings.

'Bradley Hand ITC' is not a web safe font, so it cannot be used on a web page unless you configure @font-face.
Related tutorial:
http://wysiwygwebbuilder.com/webfonts.html

How can I get this sample project to you?

About the font, the "Bradley Hand ITC" is installed on my PC. I do not get any warning/error message during design nor uploading. The end result is definitely not WYSIWYG. Why not just upload the font data?

Please see:
viewtopic.php?f=10&t=82134

About the font, the "Bradley Hand ITC" is installed on my PC. I do not get any warning/error message during design nor uploading. The end result is definitely not WYSIWYG. Why not just upload the font data?

Just uploading the font will not work. You will need to configure it so the browser known what to do with it.
Also, in many cases this will violate copyrights. There is no way for the software to know which fonts you have paid for or which ones are free to use.