Cannot run Arkio simultaneously on mutliple Quests

Running the same app on multiple Quest headsets using the same Meta account can result in an issue where the headsets will show a warning “Already playing this game on a different headset” or "multiple devices can’t access this app at the same time" 

This is a known issue related to the "App sharing" feature that Meta introduced with multiple account logins on one headset. When "App sharing" is enabled on any of your logged-in devices it prevents apps from running at the same time for that account on other headsets. You can read about other users experiencing this online and you can disable app sharing from Settings>Profiles

We also use multiple headsets on the same account and can confirm disabling the app-sharing feature and removing any guest accounts allows Arkio and other app store apps to run simultaneously on many logged-in devices. An alternative is logging in the headsets to different Meta accounts or using the Meta for business to manage your headsets.

If you have questions about this you can best contact Meta's customer support as they should be able to help you with account system limitations you might be experiencing.