The chart dashboard shows the licence state on the Licence row.
- WebRequest blocked — add this website under Tools → Options → Expert Advisors → Allow WebRequest for listed URL, then re-attach the EA.
- Account not licensed — the MT5 login you're trading isn't on your subscription. Check it under Dashboard → My EA, or swap the account there.
- Expired — renew from Billing. You don't need a new file: the running EA picks up the new date at its next check.
- Revoked — this file was replaced by a newer build. Download the latest one.
Still stuck? Open a ticket under Support and include a screenshot of the chart dashboard.