Michael
please look at your Z values, and verify if the images have good height values representing height above sea level (not height above ground).
If these images are from a DJI drone, especially a Mavic, please adjust the Z values before processing. I have seen problems with attempting to fix the Z values after an initial process has been run; Bad Z values will generate an erroneous focal length, so you may need to start a new project.
(Don't worry about having to re-measure all of your control points - you can *export* the control points from your existing project, and import them into the new project)
If you need more detail, let us know
Cody B.