TYPO 

SVG IMPORT 

Please keep in mind, that the SVG should have only one line.

Material Extrude

If you want to change the material of the extrude - Keep in mind, that you have to change your material settings to this:

Change Font
If you want to change the font, go like this. Keep in mind that the font should not be very thin.

If you import the setup into a new scene (Eevee)

You have to enable the Screen Space Reflections and the Refraction in the Eevee settings: