What to do if the FTP server does not upload files and folders (VSFTPD)?

Question

FTP

I created a vds on a yandex cloud for a minecraft server opened an ftp server using vsftpd configured it checked its status was green and active, well, like it works connected to it via file zilla (ftp client) I want to upload the assembly there but they do not load and writes that file transfer interrupted by the user, I beg you, tell me, I have already killed 20 days of the trial period