but still can't login through the app
where do in find login code ?
is it part of the url i'm on when I succefuly login from browser?

From the app -> click login -> login via the browser -> click copy auth code -> return to app and click login with code -> paste.

there is http://mixo.dj/support. no text or button matching "click copy auth code"

need to inform that I need to run as root with --no-sandbox to be able to launch mixo-2-4

Yes that seems to be a known Linux issue with certain apps: https://medium.com/@dadianas/solving-appimage-sandbox-issues-a-system-wide-fix-for-linux-users-1dd61f9c98a3

So do you see this after login?

nope here's my screen after webbrowser login. mixo app still waiting and no confirmation of login

Click Logout in your profile.

In the app, click Retry Login.

This will open the login page - login and it will automatically open the app and login. If it does not automatically login, click “Copy auth code” then in the app click “Login with code” and paste the code. It should work!

problem disapear due to some updates, i think, thx for helping me