Different tools measure different events. A redirect tracker may record a click before a destination-page analytics script loads.
Privacy settings, script blockers, page-load failures, duplicate filtering, bot filtering, attribution rules, and time zones can also affect the totals.
Compare the same date range, time zone, destination, and metric. If the difference needs investigation, send support your order number, report links, and a screenshot. Hide passwords, API keys, and unrelated customer information.