Which Symbols Does It Manage?
Due to the fact that the Candle High-Low indicator is calculated for the symbol that you have selected when you create a new cBot instance then it will only adjust the stop loss for that particular symbol, it will not manage all open symbols, if you wish to use this tool on another symbol, you will need to create a new cBot instance and configure again.
The MA cBot will open trades with a unique instance name so that your other trades that are opened manually or automated are not also managed by it, the Trailing Stop Loss Candles cBot will manage trades but only if you configure it correctly.
Tip: Your issue is not the Moving Average Trading system, but a 3rd party tool that you wish to use to manage the trades which is the TSL Candles cBot.
In order to make the TSL Candles cBot to manage other trades you need to set the label name to be the same as the instance name and you need to attach the TSL to the chart for the same symbol as the MA crossover cBot.
You should find full details on how to use the TSL candles on the product page.
Hope that helps :-)