Upload and delete files from the frontend and Login Shortcode

Hello,
I bought the plugin + all the Wordpress add-ons from WP File Download.
I have been configuring, thanks to one of your partners, Williams , the plugin options.
The truth is that it has not been easy but with his help we have been able to "almost" achieve it.

Let me tell you:
I bought this plugin because I thought it was very careful and evolved with respect to others in the competition.

But I find some "deficiencies" or functions.
- That users can access with a "shortcode" option to log in.
- That users can delete files.
- That the files are previsualized, it is much faster to locate a file, document if you can see a preview instead of an icon. Even if it's just JPG files.
- That the files could have an "expiration" date would be great. And be automatically removed from the server after that date. That way you save a lot of manual cleaning time.

In my case I use this plugin to share files with my clients and suppliers (Google Drive) and I would like to develop functionalities to improve usability.

But I also have to say that it is usually a good plugin and I think it may be the best in its category.

I hope you can take these observations into account for future updates, they would be very useful.