Xbox app and connecting a already existing console

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this RHYSIE

This can be a bit dumb, but can you try turning off all the remote features (make sure to have instant-on power mode enabled)

After you turn off the remote play features. Power cycle your Xbox console
1. Turn off your console by pressing the Xbox button on the front of the console for about 10 seconds, until it shuts down completely.
2. Unplug the console's power cable from the console and from the power outlet. Wait 5 minutes.
Important: Be sure to wait at least 5 minutes. This step resets the power supply.
3. Plug the console power cable back in.
4. Press the Xbox button on your console to turn it on.

After that, try to remove and re-add your profile on the console.

In case you need it, here's how to remove and re-add:

https://support.xbox.com/en-US/help/account-pro...

Also disconnect your router from power for about 3 minutes. Then connect it again an when everything is working, reinstall the Xbox app in your phone and try again

In case you need detailed steps about how to re-configure remote play.
Use this article:
https://support.xbox.com/help/games-apps/game-s...

Hi Mario

Sorry to hear about that, however, you can try following these steps on your console:

You might need to reset your console but keep your games and apps. This will delete any corrupted data in your console's OS. Ensure that you know your Microsoft account and password before doing so and your console is connected to the internet.

Press Xbox button> Go to System> Settings> System> Console Info> Reset Console> Keep Games and Apps

Once it restarts > Sign In > Choose your last settings

Once done, check your remote settings by going to Settings > Devices & connections > Remote features > Ensure that "Enable remote features" is checked.

See your power mode option if its set to Sleep, if its on Sleep, you can turn on the console and turn it off, however, if its on Energy saving, you can only connect to it if you manually turn the console on.

Then try to connect to mobile data on your phone while your console is connected to your home wifi.

Let me know.

If you've already signed in to the app, select the Console icon in the upper right corner of the home screen, and select Set up a console > Existing Console.

Let me know if it works!

Updates that already exist will prompt for download when you fire up the game itself while your console is connected to live.

Updates are completely free.

An official Xbox 360 Hard Drive is required to play original xbox games.

That’s not likely to happen, however, the possibility exists if the app developer didn’t optimize the app.

Would I know what troubleshooting methods you tried on your console?
Additionally, did you try connecting your console to another HDR compatible monitor or TV to verify if the same behavior occurs?

Lastly, is your console enrolled in the Xbox insider program?