A few tips:
1) your link doesn't work.
2) Nobody in their right mind would subscribe to a service at 50 euro / month without a longer period of showing success behind you. 4 days?
3) Perhaps a good marketing strategy for you would be to continue to post 1 out of every five signals. Then, once a week you can show a platform shot of all completed trades or something to prove your continued success. If your signals are that good, the 1 out of five posting would get people confident in the system and more likely to subscribe.
If you are correct on your success, it shows your mathematical brilliance, but I think you need to hire a marketing firm.