Signals Notebook: Signals application "Launch" link is not shown on Signals One portal page

Signals One portal page (https://YourTenantName/portal/) shows links to launch individual applications, e.g. "Inventory", under the section called "Apps":

If e.g. the "Signals" link (top left on the screenshot) is missing from "In your subscription" section, user may not have a current license to access the Signals Notebook application. Signals One administrator needs to assign the corresponding license to that user.

If even the administrator does not see any application "Launch" links, or the entire "In your subscription" section is missing, the license may have expired. Please contact your Account Manager for renewal.