Uploading

I'm impressed with most things in the app. I just have a problem why the app makes it impossible to simply upload photos from the file that you're in. I simply cannot select photo, hit upload to Lightroom. No, you have to go into Lightroom and try to find the file that they're in, but Lightroom doesn't give you access to all your own files, nope you have to make sure your photos are in a special file. It's a mobile app, I should be able to upload photos to the app not upload photos only while on the app. I'm able to do it with the GoPro app without issue, why can't Lightroom or Rush do the same.