To retrieve the URL of a campaign on Facebook, it’s not as straightforward. Here are the steps:
First, locate your campaign in your news feed.
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Click on the “…” and select “Embed to a website.”
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Click on the “Advanced Settings” link.
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Finally, the URL can be found in the “Post URL” field.
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Please note that the interface and steps may vary slightly depending on any updates or changes made by Facebook.