Having issues with Positioning input from Arduino to PixHawk [Pozyx with PixHawk]

So I’m recieving the positioning data from the Arduino with Pozyx and I try to use the Arduino data into the PixHawk/Mission Planner, but I’m recieving the following message: “EKF3_IMU0 stopped aiding”.
It seems the communication between the Arduino with Pozyx and the PixHawk/Mission Planner isn’t working as it suppose to. Once I try to loiter, it starts to tip over and I have to save it by manually control.
I started downloading the DataFlash Log file, but it seems to big to find the right Data out of it. So I can’t post the Graph Value.
Screenshot of the situation