Download the file you received, then in MT4 go to File → Open Data Folder → MQL4 → Experts and paste the EA file there. Restart MT4, then drag the EA onto a chart.

Message us with: Broker + account type Screenshot of Chart with EA, Inputs, Experts, Journal Your symbol names (e.g., XAUUSD)

Most common causes: spread increased, broker symbol changed, MT4 disconnected, AutoTrading turned off after restart, VPS sleep/restart, or a filter threshold was triggered.

Remove the EA from the chart, re-attach it, and click Reset in the inputs tab (or load the default set file if provided).

Check the Experts and Journal tabs in MT4 for messages. Also confirm your filters aren’t blocking entries (spread guard/news filter/equity protection). If needed, send us screenshots of Experts + Journal.

Yes. MT4 must remain open and connected for the EA to operate. If MT4 closes or disconnects, the EA stops managing trades.

Replace the old EA file in MQL4 → Experts, restart MT4, then re-attach the EA and confirm settings.

Trade disabled: enable algo trading and check broker permissions Market closed: wait for market open Invalid account: confirm server name + account number + password are correct

Use a VPS close to your broker’s server location, keep MT4 running 24/5, and avoid installing unnecessary software that can slow it down.

Check these common issues: Is AutoTrading enabled? (smiley face in MT4) Is the EA on XAUUSD M15 chart? Is the license valid? (check panel) Is it within trading hours? (check panel) Is spread protection blocking? (check panel) Is daily loss limit reached? (check panel)

Click the AutoTrading button at the top of MT4 so it turns green. Also check Tools → Options → Expert Advisors and enable automated trading.

In Tools → Options → Expert Advisors, enable: Allow automated trading Allow DLL imports

It usually means automated trading is blocked (AutoTrading OFF), permissions are not enabled, or your broker/account doesn’t allow algo trading.

Gold Killer EA: attach to XAUUSD chart

Gold Killer EA: strictly Raw/ECN (low spreads required).

Yes — a VPS is recommended for 24/5 stability. Install MT4 on the VPS, log in, attach the EA, and keep the VPS running.

Common causes: Market closed (weekends) Invalid price (broker connection issue) Insufficient margin Spread too wide Check the Experts tab in MT4 for specific error codes.