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It sounds like your HTML file is formatted as HTML, but saved as a txt file. It needs to be saved with the .htm or .html file extension in order to be interpreted and displayed as a website by the browser. I would try saving the file as TWD.html instead of TWDhtml.txt and see if that helps.
If this doesn't work, I'd recommend checking out the GoDaddy Help Center. They have some documentation about uploading files.
I hope this helps, let us know if it doesn't!
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