Why is the text element ignored

[rain...@gmail.com]

I have what I think is a perfectly fine SVG that happens to contain the text element. This element is getting ignored when importing via Fontello. I see on the site during import it mentions "Skipped tags and attributes: text,fill-rule,fill" but no documentation to suggest why. 

I've attached the SVG in question. Importing results in the "30" text being removed completely from the svg. 

Any thoughts as to why this is? Is there a way to get around this?

[Why not Anonymous]

Fonts glyphs don’t renderer SVG.
They render compount paths.
Fontello does not convert your SVG into paths, it uses the paths inside the SVG to create the glyph. Other elements of the SVG are ignored.
You can also not use filters, gradients, embedded images or other features of SVG.
Even intersections will not work.
Use an image program to convert your svg into paths and it can be used as a glyph.