Hi @forexandme8, thanks for your understanding. I don’t want to mess up with WP7 people. But what they do, is incorrect in principle of arbitrage. I don’t know the concept behind theirs, but publicly use a technique will easily patched by broker. 
If you know arbitrage, you have to keep it safely. Less people use it, is better. WP7 is using FIX API, that means you need to give them your account + password, you don’t need EA (information from their website). That means engine is on their site. I can be also an application that they give to you. The arbitrage algorithm has to be updated frequently. It doesn’t work consistently. All depends on market condition. That happens in my place.
If you already have good network latency, and the algorithm still doesn’t work that means the algorithm have to be changed.
WP7 seems looking for thin spread to work for. Base on the articles, it’s something todo with tick scalping. You can’t use it to broker such as ICM. You probably still can use it on Raw Spread Account during a very low volatility market. It only happens at a very short of time windows. Will it profitable? You have to consider the commission.
You can use an EA to monitor the anomaly with the spread in a broker. Monitor in a month to confirm the patterns. When you can see the anomaly appears frequently, then you can do the “thing”.
Most HFT is good on offshore brokers. Most of them have good LP for HFT. Make sure your broker is not a market maker of back by market maker. You cant have profit with them, if they know you have benefit from the anomaly, they will fine you by increasing the swap fee senselessly. 
welcome back