Hi,
I guess that your project did not generated a quality report in the *.pdf format? Only the *.xml right?
Do you have the log file?
You can drop the files here if attaching files does not work:
Google Drive
But I can already say few things.
If you want successfully process thermal project, the overlap should be at least 90% side and front:
Then you is your camera defined? Did you edit your camera model?
Attached you will find the camera specifications.
FLIR A655sc 25°.pdf (30.6 KB)
You can also add the geolocation for your images in Pix4D.
Best