FTP External access Amazon ec2 Windows Server

I have an instance of Windows Server 2016 t2.micro, in amazon ec2. I installed IIS with FTP support. I followed this guide to put my ftp accessible externally:

link

But without effect, in filezilla I get up to "arrive" at the IP address of ftp, but no welcome message is received, and the connection closes immediately.

I've set up instance security groups like this:

Butonlythedefaultportsremainopen,allothersthatIdeifytheredonotopen:

I do not know why ... I do not know what else to do. I'm desperate.

PS: HTTP (port 80) works fine.