The archive you receive at the end of a class will be a zip file that contains an HTML file once opened. This is the correct format. We choose to send your work as an HTML as it allows us to share a richer file with you, complete with course material, your work and any feedback received.
The HTML file is a downloaded document which opens locally on your computer, not from the Wet Ink website. You will always have access to this file as long as you save it to your computer.
If your class has already ended, you can download a PDF copy directly from Wet Ink. See this guide for more information.