Hi there! I understand your Zero app is opening but not showing your current fast data, time remaining, or any statistics for the past three weeks. Let's see if we can get this sorted out together.

To start, can I ask if you’ve tried any troubleshooting steps so far, like restarting the app, checking for updates, or clearing the app cache? Also, are you connected to the internet when you open the app?

Generally, this kind of issue can happen if:
- The app needs to be updated
- There's corrupted cache/data stored on your device
- The app’s data sync hasn't worked correctly

Here’s a step-by-step approach I suggest:

1. Check for app updates: Go to your app store and make sure you have the latest version of Zero installed. Sometimes bugs are fixed in updates.

2. Restart the app: Fully close the app (make sure it’s not running in the background) and then reopen it.

3. Ensure a stable internet connection: The app needs to sync your data, so verify your internet (Wi-Fi or mobile data) is working properly.

4. Clear the app cache: Since you’re on Windows with WebKit, clear your browser/app cache for the Zero app, as cached data might be causing old data not to load.

5. Log out and back in: Sometimes re-authenticating can refresh your data sync. Try logging out of your Zero account inside the app, then log back in.

6. Check if VPN or firewall settings might block the app: If you use a VPN, firewall, or DNS app, try disabling them temporarily and see if the data appears.

If none of these work, the data might not be loading due to an app issue or server syncing problem. You might consider uninstalling and reinstalling the app as a further step, but be aware you might want to back up any local data first.

I also found some related info that others have had similar problems where clearing cache and updating the app helped resolve missing data issues2.

Could you let me know if you’ve tried any of these or if you want me to walk you through any of the steps? Also, if you notice any error messages or have more info about when the issue started, that would be helpful.