Hi there! I'm sorry to hear that you're having trouble with the eBay app. It can be really frustrating when things don't work as expected. Let's see if we can get it sorted out together.

Could you tell me a bit more about what happens when you try to use the app? Are you seeing any error messages, or does the app simply not open?

In the meantime, here are some quick troubleshooting steps you can try:

1. Restart the App: If the app is open, close it completely and then restart it.

2. Clear Cache and Data:
- Go to your device's Settings.
- Tap on Apps or Application Manager.
- Find and select the eBay app.
- Tap on Storage and then Clear Cache and Clear Data. This may help resolve any temporary issues.

3. Sign Out and Back In: If you're logged in, try signing out and then signing back in.

4. Restart Your Device: After clearing the data and cache, restart your device.

5. Reinstall the App: If none of those steps work, you could uninstall the app, restart your device, and then reinstall it from your app store.

Give these steps a try and let me know how it goes! Are you satisfied with the suggestions I provided?