MCFly,
If you have EAS Signals on a M5 chart it uses M5 APA and ADX, and M15 APA and ADX. So if you are on a H1 chart it uses H1 APA and ADX, H4 APA and ADX. Soon I will code an option in the indicator for custom timeframes, but for now it uses the current timeframe and the next highest for calculations.

Hope this helps,
-DREWP