Hi there! I understand that you're seeing a black screen after selecting your school in the Nutrislice app. Let's work together to resolve this.

First, can you let me know if you've tried any troubleshooting steps already, such as restarting the app or your device? Additionally, could you tell me which school you're selecting and if you have a stable internet connection while using the app? This information will help me understand the situation better.

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

1. Restart the App: Close the Nutrislice app completely and open it again to see if that resolves the black screen issue.

2. Check Internet Connection: Ensure that your internet connection is stable. You can try browsing a website to confirm this.

3. Update the App: Make sure that you have the latest version of the Nutrislice app installed. You can check for updates in the Microsoft Store.

4. Clear Cache: If possible, clear the cache of the Nutrislice app. This can often resolve display issues.

If these steps don't help, we may need to look at further details or consider that it might be an issue related to how your school is set up in the app. Some users have reported similar issues due to school-specific configurations1.

Let me know how it goes, or if you need further assistance!