The following "Incorrect username or password" error can sometimes generate when you are trying to integrate your AutoEntry company with Kashflow.
If you are confident that your login credentials are correct then the issue is more than likely the version of Kashflow you are using.
Unfortunately we do not directly integrate with the Accountants version of Kashflow. If this is the version you are using you will need to utilise the clients details to set up the integration.
Please note: You will also need to make sure you have enabled your Kashflow API. You can find more information on that here.