Easy Anti-Cheat watches the game on Windows. When it updates, or when ARC Raiders updates, an older build of this package can stop or become unsafe to use. That is why Updates exists. We post a note when a patch needs a rebuild. Wait for that note. Do not queue on the previous file just because the game still launches.
A new anti-cheat build does not always mean the tool is “done.” It means we have to match the new version and say so in public on Updates. Your license stays valid while it is active. You do not buy a new plan for a normal rebuild. If the new build will not start, email support with the order ID. No page can promise that every account is safe.