How Can I Create a certificate for FTP To use it as FTPS?
I changed FTP to SFTP how can I remove it? cause I Don't want to give any user ssh access and it's port
I don't know how to remove it for certain.
But I think you could remove the custom things made and the sftp conf and build proftpd again.
Or you could change to pure-ftpd.
I think it might be best to create a topic then stating in the topic title that you have issues with installing letsencrypt and what is working and what is not working about it.