Try the following as a first step to get Depop back on track:
- Kill the app. On iOS double tap the home button and swipe up. On Android, open the apps currently in use and swipe sideways
- Payment issues? Try disconnecting and reconnecting your PayPal in settings
- Make sure your app is up to date
- Delete the app and re-download via the App Store or Google Play Store . (Don't worry this won't delete anything)
- Check your network coverage. Make sure you've got full signal and or WiFi