Final answer:
Purchased algorithms are generally activated from the Account page or within the software where account settings or licensing options are managed, not from the Home page or Settings page.
Step-by-step explanation:
When you purchase algorithms, whether for computational purposes, data analysis, or software development, they typically need to be activated or invoked within the environment they are intended for. The activation process can vary greatly depending on the platform, application, or service you are using. However, as a general convention, if the activation involves a user account or subscription-based service, you would likely access these features from the Account page or within the software where account settings or licensing options are managed. It's less common for activation to be housed on the Home page or Settings page, as these areas typically provide general information and configurable options that are not directly related to activating a purchased service or feature. As for the option that they "Cannot be activated," this is typically not the case as purchased algorithms are meant to be utilized and hence should have a method of activation.