Typing the exact symbol name as it appears on MT5.
For example, in TradingView you can use: BUY ETHUSD Q=0.1 or {{strategy.order.action}} ETHUSD Q=0.1.
Using symbol mapping.
This tells the EA to automatically convert one symbol name to another before executing the trade.
For instance, if you want to map ETHUSDT from TradingView to ETHUSD on MT5, you would add the following to the Symbol Mapping field: ETHUSDT=ETHUSD.
Be sure not to include any spaces in between the symbols — that’s why your setup wasn’t working.