The invite link is the fragile part of this test, and it is worth checking before anything is placed.
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Delivery here depends on an invite that stays open for the duration of the window. Links with an expiry, a use limit, or an approval step in front of them are the most frequent reason an attempt produces nothing visible. Open yours in a browser where you are not signed in and confirm it actually admits somebody, then leave it alone.
Once that is settled, the reading is short. Note where the figure stands with the time, let the window run, and check once from outside the channel rather than as its owner. Owner views carry extra information and refresh on their own schedule.
Give anybody a reason to read what you post. A figure above a channel with three messages in it invites the wrong conclusion from exactly the people you were hoping to reach, and that half of the problem is not one a delivery addresses.
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