Hi!
So you use E90 camera with the H520 drone. OK. In our database, we do have E90 calibrated but resolution - 5472 x 3648, not the one you used - 4864 x 3648. While comparing the results in the screenshot we can see that the initial and computed position for X and Y is similar but the Z value it’s completely off. So my assumption is that we have to check the EXIF of your images to verify which altitude tag Pix4Dmapper takes from your images. For example, for DJI drones, we read the XMP Absolute Altitude tag. More about this topic here. I assume that we read the wrong tag. Knowing that you are in Bavaria I don’t believe the Z is 25m only 
Therefore, could you please upload here one picture from your dataset so I can check the EXIF metadata? Additionally, please send us the Quality Report of the project so I can verify the coordinate system for your input and output data.
Thanks in advance!