The trust of your users also depends on how you handle their private data. Legal regulations require that you provide a privacy policy. The privacy policy of Flux is not relevant here, but your own.
If you have a website, link the privacy policy of your own site in this field. If you do not have a privacy policy, use one of the many services that offer a corresponding text and link it.
In the corresponding text, assure users that you will handle their data carefully and will not share it with others.