On F-Droid another app snuck in with the same name and icon as Gadgetbridge.

We advise you not to install "Gadgetbridge" from F-Droid if the you see the package name being different from nodomain.freeyourgadget.gadgetbridge

For more information read our blog post on the issue

https://gadgetbridge.org/blog/dont-get-your-apps-mixed-up/