Pix4Dreact - Unable to import images in .tiff format

I’m using a free trial (which Pixie assures me does not place limitations on the file types I should be able to import) and I am unable to import images in .tiff format. The online documentation says that I should be able to, but the only option I can see in the UI once I’ve created a new map is to import as either .jpg or .jpeg (see attached image). Using either option for importing photos or folder does not allow me to see the .tiff images or import the folder containing them as it thinks there are no images (“Could not find image files in the selected folder. No images were added.”).

There is very little I can do in the program interface so no settings to toggle that might change this. Any ideas what is going wrong here?