| The EA is not visible in Navigator | The EX4 was copied into a different terminal data folder, or Navigator was not refreshed. | Use File → Open Data Folder in the same MT4 terminal, confirm MQL4/Experts and restart MT4. |
| The EA is on the chart but does not trade | AutoTrading, live-trading permission or market conditions may prevent execution. | Confirm both permissions, read the chart message and logs, then allow the strategy to wait for its programmed conditions. |
| License or account error | The file was activated for another MT4 account number or account type. | Compare the logged-in number with the number sent to support. Do not send a password. |
| Wrong symbol or timeframe | The edition is attached to a chart other than AUDUSD H4, AUDUSD M30, USDJPY H1 or EURJPY M15. | Match the EA, pair and timeframe exactly and check any broker suffix. |
| Not enough money or margin | The requested order is too large for the available free margin or other positions already use it. | Reduce exposure, review all open trades and never use higher leverage as a substitute for risk control. |
| Results differ from monitoring | Broker feed, spread, execution, deposits, start date, settings or account conditions differ. | Compare like with like and expect some variation; do not force entries to reproduce another account. |
| MT4 stopped after a restart | AutoTrading, chart templates, login or VPS startup did not restore correctly. | Verify the account connection, EA status, charts and logs after every terminal or VPS restart. |
| Duplicate or conflicting trades | The same EA or another strategy may be attached to the same pair in several charts or terminals. | List every active chart and terminal. Keep one controlled EA instance per pair unless the configuration was intentionally designed otherwise. |
| Orders are rejected | Market is closed, volume is invalid, stops are too close, trading is restricted or execution failed. | Read the exact error code in Experts/Journal and confirm broker symbol specifications before changing the EA. |
| FX Blue chart does not display | Privacy protection, an extension or the monitoring provider may block the third-party frame. | Open the public FX Blue profile directly, test another browser with extensions disabled and do not treat a blocked widget as missing trading history. |