Problem to activate ESET which ports must be open?

On this page https://support.eset.com/kb332/ it says it only needs to communicate with remote servers on port 443 and 80, which should be for the normal operations.
On this page https://forum.eset.com/topic/4279-remote-activation-behind-firewallproxy/ they say that for activation it needs to open port 2222, but on another site they talk about port 2221.