Hi Jess,
Thanks for contacting us!
For Arabic text, you can either use the ‘Global’ font (the first font in our list), or you can use Arabic fonts installed on your computer by clicking the ‘Load My Fonts’ button at the bottom of the Text tab.
You can download and install fonts from sites such as Font Space or Da Font and install them. You will need to restart your web browser before they’ll appear within Ribbet, because Adobe Flash caches the font list.
Let us know if you have any further questions!