Sandbox ExactOnline

We are trying to set up a client in de the Sandbox environement and connect it to our demo account in ExactOnline to test the API - unfortunately oAuth to EOL is acting up. Even if the browser has an open connection with EOL BE, we get the message invalid authorization request

Anyone similar experiences?

@JorisJoppe the sandbox environment was not configured to sync with EOL, we changed this now, so you should be able to link it.

Thanks @Tim - works!