No, it is very easy to get started with Fluctus and get the weight into the Tendy app. You just need to sync your device when it’s time for weighing. It is important that the scale is turned on when the app is searching for the scale. You do not need to press any button or similar, just have the scale turned on for the app to find it.
Flucuts does not need to be “claimed” or added to "My devices", you simply turn it on and sync the weight directly into the Tendy app.