Using Office365 with Synology NAS

Hai there,

I'm using Office365 on my iPhone/iPad. To connect with the Synology NAS I use the app DS File.

Now I can open and save documents from the NAS in for example Word. But as soon as I'm creating a new document from scratch on and try to save this, I'm not able to select the DS File app as a location. The only location then to select is the iCloud Drive. I've activated the location from the DS File, so it should be working.

But maybe I'm doing something wrong and maybe you can point me out how it should be working.

Hopefully somebody can help me. Kind regards, Michel.