Some brokers may have restrictions on the use of EAs or certain trading strategies. Check with your broker to ensure that they allow the use of EAs and the specific strategy you are using. Make sure that you are using the EA on the correct account type. Some EAs may not be compatible with certain account types, such as managed accounts or PAMM accounts. Ensure that the EA is attached to the correct symbol and timeframe on the live account. Live market conditions can introduce slippage, which can affect the EA’s performance and execution. The data feed on the live account may be different from the data used in the tester or demo account. This can lead to differences in the EA’s behavior.