I've never had problems with Scribbld not working for me, so that's super weird. Wish I could help!
Anyway, what most people like about it is you can use it to build HTML pages (no div styling; CSS and HTML separate) and it lifts some limitations that coding things for IJ entries has, like hover effects, custom fonts, custom scrollbars, etc., so it's wonderful for static pages like game info and character bios, because of how highly customizable it is.