Once you've exported your video, it would show up on the video preview page with Typito branding on the top left:
You can remove the Typito logo branding by clicking on 'Remove TYPITO Branding' button on the top left of the video. It would open up a popup flow that would ask you how to remove branding - by paying $10 for the particular project or by buying one of the subscriptions on Typito:
Once the logo is removed, the video will show without Typito logo in it.