Sorry, I have finally been able to get to do the test, there is no error, it activates when I entered the key manually but this is after I tried to activate over the ERA
ESET Remote Administrator (Server), Version 6.5 (6.5.522.0) ESET Remote Administrator (Web Console), Version 6.5 (6.5.388.0) Copyright (c) 1992-2017 ESET, spol. s r.o. All Rights Reserved.
Microsoft Windows Server 2012 Datacenter (64-bit), Version 6.2.9200
Installed Components:
NAME
VERSION
Update module
1069 (20161122)
Translation support module
1643 (20171109)
Configuration module
1526.10 (20180117)
SysInspector module
1269 (20170321)