Welcome to Pix4D Community!
With the information provided it is difficult to say for sure what could be causing this problem. Still, I advise you to check:
- The geotags of the images and make sure that the lat/long values referred to by the drone and associated with each image are correct. In PIx4Dmapper, you can verify this information by following the instructions in the following article: Menu Project > Image Properties Editor… > Images Table
- Check the coordinates of the GCPs are correct. To do this you can do it by following the instructions in the following article: How to add / import GCPs in the Basic GCP/MTP Editor
If the above information does not help you solve the problem, I recommend you to make a ticket in the following link to receive more personalized support. (https://www.pix4d.com/support)
Have a very nice day.
Unfortunately, we can’t see your uploaded image. Please try the .jpg format, this gives the best results.
If the information provided by my colleague Heydi was not helpful, please open a support ticket here. Please upload a couple of images, the Ground Control Points used, together with the information about the coordinate system.