After completing work on a website for my friend, I put all of it on 000webhost got it working, except for the Twitch.tv stream I wanted to link, wouldn’t open into the iframe, even though it worked when I viewed the website locally.
The attached .zip file contains the HTML documents I used.
The link is to XPZstream.html and should be to xpzstream.html (server is case sensitive)
Thank you so much. I feel really stupid now.
You would have worked it out yourself eventually 
Sometimes though you go blind looking at your own code and you need a fresh pair of eyes to take a look.
There is only one golden rule, back up frequently. The 2nd golden rules is to back up frequently too 