Batch upscale in Gigapixel 8

I’m trying to upscale a batch of 5 images in Gigapixel 8. They are all selected in the file list but only the first image upscales. Anyone else having the same problem? Any solutions?

Many thanks.

I just recently replied to our ongoing support ticket and I apologize for the delay. I’d be happy to continue our conversation within the support ticket as I believe this is more of a File Size estimation issue than the images not upscaling.