If you can't see the weather screen or the weight trend screen, make sure you've enabled the screens.
To do so, go to Withings App > Devices > Body+ > Customize screens. Then, tick or untick the screens according to your preferences. You can also drag and drop them within the list, to arrange them in your preferred order.
Note that you'll need to weigh in once after customizing the screens for the changes to be finalized.
If you've just installed your scale, please note that you'll have to wait 24 hours after the installation to see the weight trend screen.
If you still encounter issues, reach out to Customer Service by clicking the Contact us button at the bottom of the page.