Draft saved posts upload to "?post_type=…."

Unless i publish a post, it just uploads to a really complicated url beginning with “?post_type=”, which basically means the links then don’t work in a browser.

Obviously i don’t want to post anything live without any pictures or audio clips in.

It does upload successfully with a Published post, tho the plugin then breaks a “Insert Audio Player” button I have, so although my clips are now nicely organised, I can’t actually put any in a post!

This plugin is a great idea, but it just doesn’t work for me ??

https://www.ads-software.com/extend/plugins/custom-upload-dir/