Lab Enviroment for ET70 Sophos Central Certificate v2017.1 - Engineer

There are several mentions of the "Underscore" Link or hyperlink in the pdfs, they mentioned the lab enviroment link is located in the resources. But not a single module of this course has this hyperlink. My trainer and co-workers have no idea themselve and i have already send an email to my partner portal support but am yet waiting for an answer. Would appreciate any help and information on the lab enviroment and/or on outdated courses! :)