Hi there! I understand you're having trouble opening the WHIO app after your Wi-Fi was down for a bit. Let's take a closer look at this issue together.

First, could you let me know if you've tried any troubleshooting steps already, like restarting your device or checking your Wi-Fi connection? This will help me guide you further.

Restarting phone.

Thanks for restarting your phone! It's a common first step to resolve app issues. Let's try a few more things to see if we can get the WHIO app working again.

1. Check Your Internet Connection: Since the Wi-Fi was down, double-check that you're connected to a stable network. You can do this by going into your phone's Wi-Fi settings and ensuring it shows a strong connection.

2. Clear the App Cache: Sometimes, clearing the app cache can help fix issues:
- Go to your phone's Settings.
- Tap on Apps or Applications.
- Find and select the WHIO app.
- Select Storage, and then tap on Clear Cache. Don't worry, this won’t delete any personal data within the app.

3. Reinstall the App: If the above steps don’t work, consider uninstalling and then reinstalling the WHIO app:
- Go to your phone's Settings > Apps > WHIO > Uninstall.
- Once uninstalled, go to your app store and reinstall the WHIO app.

4. Check for Software Updates: Ensure that your operating system is up to date. Go to Settings > About Phone > Software Update to check for any available updates.

Try these steps and let me know if the app is still not opening!