The ePCT User Guide and Frequently Asked Questions are available via the ePCT login page (see screenshot below) and also via links from the “ePCT” tab when you are logged into ePCT.
Although this third party observations guide includes a brief summary of creating a WIPO account, the ePCT User Guide contains more details, including how to manage changes to an account after it has been created. The ePCT User Guide also gives information on how applicants can respond to third party observations through ePCT or make observations of their own on close prior art.