I have run the Dragon EA on several demo's for a longer while, before even starting live. On demo results I found out EUR/CHF is safest to ran on. The reason why I ran it for a long period on demo is to figure out on what floatings, I could handle emotionally and the logic behind the EA.

I went live after running it after many different demo results. On EUR/CHF biggest floating was 2%-3%, which made sense if look how the EUR/CHF has been performing this year.

I run it on 2 Live accounts and getting positive results. One account at pepperstone and one at icmarkets. The results at icmarkets are amazing. I must note: I'm not getting the same high returns as David his account. Main reason is that I chose to go a bit slower; with only 1 pair EUR/CHF and a smaller lot size than written in the manual.
Furthermore, David has been a great help on skype. And yes, it is a martingale.

When systems get deleted, it's most likely because they blew up. Humans aren't normally as shy if they're successful.