SmartKnowledgeHub has a 'back-end' for administrators, also referred to as the Portal, which is located here: https://portal.knowledgehub.cloud/.
There is a 'front-end' for users, also called 'Web', located here: https://smart.knowledgehub.cloud/.
In order to login, you need to enter your tenant (usually: company name) and the credentials (username and password).