Use this checklist after you subscribe to an MT5 copy trading bot. It includes the exact URL to whitelist in MT5 WebRequest and the MT5 Account ID you must set in the EA Inputs.
If you have multiple MT5 routes (e.g. Account 1 for XAUUSD, Account 2 for EURUSD, Account 3 for BTCUSD), use M= in your TradingView alert so the order goes to that account only:
M= is a premium feature provided by Tradesteady only.
Buy XAUUSD Q=0.1 R=MT5 M=987654321
Sell EURUSD Q=0.01 R=MT5 M=12345678
M= = your MT5 Account ID. Without M=, the alert goes to all MT5 routes.