Advanced AI Story Generator Export and Import Help

I really like this story generator, but I don't think it's export and import function work correctly.

When I export a story, it exports it as a story.json file, but when I attempt to import the file by selecting the folder it's in, it tells me that there are no story.json files in the folder selected.

Am I doing something wrong, or is this an error on the part of the creator of the generator? Any possible solutions?

Thank you