Adobe and Nextcloud

Nextcloud version 13.0.5:
Operating system and version Cent OS 7.5.1804:
Apache or nginx version NGINX 1.12.2:
PHP version 5.4.16:

I’m not sure if this is even doable, but what I’m trying to do is make a submit button in adobe that uploads a completed PDF to my Nextcloud server.

I created a public share upload only directory without a password. If I use my web browser I can upload no problem. When I put that same URL in adobe for upload it just opens the web page and uploads nothing.

Ex. https://cloud.mycompany.info/index.php/s/6tMk5kkTbcSFFFF

Is there anyway to make this work? It should just upload the file to the public share and be done.

Thank you for your help,
Jonathan