FTP is not supported - no FTP/FTPS · Issue #12520 · nextcloud/server · GitHub
Can't create a document in external storage (ftp-server) - 🚧 Installation - Nextcloud community
No FTP account possible in external storage (Error: stat(): stat failed for ftp://xxx:xxx@ip-removed/upload/ at /var/www/nextcloud/apps/files_external/lib/Lib/Storage/StreamWrapper.php#127) - ℹ️ Support - Nextcloud community
Cannot add ftp storage - ℹ️ Support - Nextcloud community