How to enable notification to mobile?
Just make it enable by turn it true is not enough.
Tell me how to configure it?

Instead of fixed point. Some dynamic trailing methods:

• Percent — trails at percent profit
• Fixed — trails at a fixed pip profit
• ATR Exit — trails at close +/- multiple of atr
• Moving Average — trails at moving average line
• Chandelier Exit — trails at highest high / lowest low +/- multiple of atr
• Candle High Low Exit — trails at the highest / lowest candle range
• Bollinger Bands— trails at Bollinger Bands
• Parabolic SAR— trails at Parabolic SAR levels
• Envelope — trails at Envelope Bands
• Ichimoku Kijun-Sen — trails at the the Ichimoku Kijun-Sen (Blue) line
• Alligator — trails at the jaw, teeth or lips of the Alligator indicator
• Exit After X Minutes — exits after custom minutes
• Exit After X Bars — exits after custom bars
• RSI - trail RSI level
• Stochastic - trail Stochastic level
• ...

Example: https://www.mql5.com/en/market/product/52283