Cannot sftp in to server, but can ssh in [Centos 7] - [SOLVED]

I've followed the "securing your server" guide here: https://www.linode.com/docs/security/se … our-server">https://www.linode.com/docs/security/securing-your-server

I've disabled root access, setup pub keys to have access only.

In cyberduck there's a checkbox to select the pubkey, but, it simply doesn't let me in? Any ideas?

Edit*:

Turns out I'm a dumbass, wasn't selecting the right key file. The one with the .pub extension is the wrong one :oops: