Session data from your site is captured by Noibu's collect.js script. The script captures everything a user does in a session, processes that data, and sends it to Noibu's databases.
In some instances we may not be able to capture a user's sessions. Some ad-blocking plugins or pop-up blockers can delete the Noibu script from the user's browser. If the script is disabled or unavailable, Noibu cannot track the user's sessions and retrieve session data.
Learn more about What Type of Errors Noibu Detects and Cross Referencing Errors Across Multiple Domains.