How to access folders on NAS using Webdav?

Josathome

I have enabled Webdav on my NAS520 and want to access my folders via https://NASIP:5003/webdav/sharedfoldername. After entering as admin, my NAS responds that FORBIDDEN and that I don’t have the rights. NAS IP is private IP that has been assigned to NAS. I am on my own network. 

What am I doing wrong? 

#NAS_Jun_2020

Teemo

It seems to me that it must operate with third party software. I'm using RaiDrive, it's working.

Josathome

I will check Raidrive for my Windows laptop, but what about a working app for iPhone or iPad...? 

Dexter

I think the default app "Files" comes with ipad/iphone, can do Webdav.
https://discussions.apple.com/thread/8094559

Josathome

... via Pages app on iPad I can connect to server (somehow). I land on a view showing a folder called Webdav, but when I click on it, I get time out message.