I have written a python script to modify the visibility of all my recorded activities from "only_me" to "everyone". The script works and the return from the api indicates that the update was performed successfully. However in reality the privacy flag is not changed. Is that a limitation of the api?
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modify visibility

Best answer by ActivityFix
You cannot change privacy on activities since roughly 2018 (I think? It's been a while...). The same goes for map visibility and deleting activities. You probably got a success code since I believe the endpoint ignores any parameters which aren't allowed rather than flagging them as an error.
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