I can't see all my installed fonts in the Datylon for Illustrator plug-in.

Installing Datylon for Illustrator with Adobe Illustrator open can cause font problems.

If you see no or only a few standard fonts in your Typeface list in the Datylon for Illustrator plug-in, you might have installed the plug-in while Adobe Illustrator was still open.

These are the steps to fix it:

3. Uninstall Illustrator
4. Install Illustrator
5. Install the plug-in (with the Illustrator closed)
More about fonts here