Importing as gallery rather than image and not showing up

Same here. I just run an import and no images have been imported. Those posts that were only a picture were not imported.

Source: https://carlosalonso.tumblr.com/
Target: https://notebook.carlos-alonso.com

also: image draft posts are imported as empty posts and can’t be moved to trash unless they have been edited before.

I had better luck with this other tool: https://tumblr2wordpress.benapps.net/