error in sharing files with cloudfiles users
What did you
Is cloudfiles another service? Do they run nextcloud or owncloud (or something that works with nextcloud)? Also, link to the service you are talking about.
yes they run nextcloud (https://kmu.files.cnow.at/login)
You didn’t answer what did you do?
What steps did you take to share the file?
To share files with users on different instance you have to type the full federated id, something like
Goto settings and click on sharing to see your federated id.