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It looks like you just copied the images from the Overview page instead of taking a screen capture from the actual WebGL experiment.

As you can see, I took screen capture

You will still be able to enter the next contest.

I took screen captures of all 5 entries. I was amongst those who passed the test earlier in the list you posted that will undergo further review. Let me refresh your memory by showing you one of my picture post
Screenshot_2018-03-05-08-33-04.png
This is an evidence, plus other four entrants I posted that say

You were supposed to click this link:

And take the screen capture from there.

Oh OK... Tnks for the correction....