HI LO Standard game by Steve davidson

Hi, I have purchased this and it started ok for a couple days then I started to lose. I quickly stopped for the day and got in touch with the seller. He agreed with me about the RNG being able to work out what system you are using and work against you so that you lose. I could see that happening by the cards that were being shown. He advised me to stop at a certain profit and use a different Betfair account every other day or so. They don't tell you that in the sales video or even the training video. Don't believe anyone who tells you that Betfair exchange games are not ****. The proof is in the cards that suddenly go against you as soon as you start playing. I am going to try to stop at £10 profit, but my first game today was a loss.