Copilot Premium License Not Being Recognized in Copilot Standalone App

Your Premium subscription works on the web and in Office, while the standalone app remains unlicensed after reset and repeated reinstalls. That narrows the investigation to the app experience; it does not show that you need another subscription. First record the exact installed app name and version, since Microsoft has changed Copilot branding and app experiences. Compare the account shown in the working web session with the app profile, including whether each session is Personal or Work. Sign out of the affected app and sign back in using the subscription-owning personal account. Check for an app update, then retest the same Premium capability in both places rather than relying only on the label. Since Microsoft Support already reproduced the difference, update that existing case with screenshots and version details. Continue using the working web experience while support investigates; another Office reinstall is unlikely to isolate this further.