The EA validates your license against our servers on startup. Errors and fixes:
"invalid" — key not found
Check for typos; copy the key from the Licenses page of your portal. Keys look like MCP-XXXX-XXXX-XXXX-XXXX.
"wrong_account"
Your license is bound to a specific MT5 account number. Either run the EA on that account, or update the account number on the Licenses page (allowed at any time, takes effect immediately).
"expired"
Your 12-month license term has ended. Renew from your portal dashboard to restore validation and updates.
"blocked"
The license was suspended — usually after a chargeback or terms violation. Open a support ticket.
Connection issues
The EA needs WebRequest access: in MT5 open Tools > Options > Expert Advisors, tick *Allow WebRequest for listed URL* and add https://mcpautomation.io. Firewalls and some VPS providers block outbound HTTPS — test the URL in the VPS browser.