FEN Indicator Signals

Chart : USDCAD H1
Date/Time : 2019.01.16 03:00
Settings : Reversal Candles=5, Min. Strength=2, # Candles Back=100

Result: Successful (A top formed at the signal time and then USDCAD reversed down for several candles later.)

Chart : NZDUSD H1
Date/Time : 2019.01.16 08:00
Settings : Reversal Candles=2, Min. Strength=3, # Candles Back=50

Result: Successful (NZDUSD reversed down right on time and the move down was big.)

Chart : EURJPY H1
Date/Time : 2019.01.16 19:00
Settings : Reversal Candles=2, Min. Strength=3, # Candles Back=50

Result: Successful (A high point formed near the signal time. The next 2 candles were bearish.)

Chart : USDJPY H1
Date/Time : 2019.01.18 04:00
Settings : Reversal Candles=2, Min. Strength=3, # Candles Back=50

Result: Successful (USDJPY reversed down on time, but it was very brief. The reversal only lasted 1 candle and then USDJPY began to range.)

Chart : NZDUSD M30
Date/Time : 2019.01.22 17:00
Settings : Reversal Candles=5, Min. Strength=2, # Candles Back=100

Result: Skipped (Market direction was unclear prior to signal time.)

Please is the 1Hour Timeframe more accurate using this FEN Predictor (Demo Version)?

The H1 TF is accurate and I use it all the time. I do use other TF's like M30 though. I posted a trade made today using the M30 TF in my trading journal section. Even the M15 is accurate and there are many examples of this TF being used in the signals section.

I have traded and have had more losses than wins. 

It also depends on how you are exiting trades. For example, if you are using a TF like the M15 then you shouldn't expect to set a TP of 50 pips. Sometimes this may work, but in general the lower the TF then the smaller the reversals.

Also, what is the best time / trading sessions to trade with the signals for best results please? 

This does not matter. Use it 24 hours a day if you want. I do not think the results will change.

So if i am on the 15min timeframe, i choose 15min expiry Option.

Please do you have any idea or suggestion on how to choose expiry on using this for the Traded Candle as expiry?

Using a 15 minute expiry because you are using the M15 TF won't necessarily always work. Sometimes, the signal candle will continue in the same direction for some time to form a high/low point before the market reverses. And sometimes the market begins to reverse right away, as was the case in that trade I mentioned. If you had traded Binary Options with that signal and entered right away using a 30 minute expiration, it would have been profitable.

I would say you can try using different time frames to nail down more precise entries and even use different settings, but you are only using the free version and it has restrictions.