Bug on Steemwinner

So today I discovered a bug on steemwinner that made the site not to randomly select a user from the persons who commented on my post.

For those who don't know what steemwinner is and how it works I will do a quick introduction about the system.
Steemwinner is a system that can be used to randonly select one or more winners from the people who commented on your steemit post hence the name "steemwinner" so with this you can conduct a contest and pick a random winner from the persons who commented on the post. All you have to do is visit their web page using this link, paste the link of the contest you want to select a winner and then click "get winner" and it is done...

Now back to the bug, I did a screenshot video to relate my experience with the system some hours ago.
See video below.

Video details
Source: Was screen recorded by me using Camtasia recorder
Length: 1 minuets 55 seconds
Language: English
Voice: Mine
Posted on: My youtube channel.