The rare test where the result is a change in the settings panel rather than a number on a public page.
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This one is easier to verify than most, because the effect is not a number on a page but a change in what the server can do. Look at the server settings panel before and after: the tier indicator and the features attached to it are the reading. If the panel changed, the delivery worked, and no signed out browser or cached view is involved.
What a small sample cannot show you is duration. Everything about how long a level holds and what happens when it lapses plays out over weeks, and a demonstration finishes long before any of that becomes visible. Treat the result as confirmation that the mechanism reaches your server, and nothing more.
Make sure the server is one you intend to keep, that you hold the permissions to see the settings panel, and that nobody else is applying changes at the same time. A sample run during a week of reorganisation produces a reading nobody can interpret afterwards.
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