Ok its been some time since I tested this.
The method is very simple, although some complications or problems are answered by the videos. I feel OP doesn't explain it fully. If such problem arises, you should use the Getting Started page. And as other guys have informed already, that you need to pay $1 per month but that seems to be only for examples they have listed. If like me, you just want a bot running on it or some program or nearly anything running on it, it needs no further investment. Although the confusion caused by the video is a minus point, the "method" is more than worth your price, as I don't think even f I googled or researched "Free VPS" all day I would find it, thanks for making it easy OP.
A question that I want to ask though, is , does the website detect if I have multiple accounts ?