I created an instance of Debian on Amazon Lightsail. Everything works fine except FTP. I added port 21 to the firewall:

Next, I followed these instructions to the letter on how to install proftpd: https://www.tecmint.com/install-proftpd-in-ubuntu-and-debian/
As a last step, I added a password to the proftpd user and restarted the service. Then added an FTP connection in Filezilla with the following data:

And I get the following error:
Does anyone use ftp with Lightsail?



