Hi there! I understand you're having trouble signing into your Modivcare app, even after uninstalling and reinstalling it. Let's get this sorted out together. Just to clarify, when you try to sign in, do you see any specific error messages? Also, are you entering your username and password exactly as registered, including capitalization?

In the meantime, here's a step-by-step approach we can try:

1. Check Credentials: Make sure your username and password are correct and case-sensitive. Sometimes it's easy to overlook capitalization.

2. Password Reset: If you’re unsure about your password, try resetting it via the "Forgot Password" option—you can do this on the Modivcare website or app by entering your registered email address. This can often resolve login issues caused by incorrect or expired passwords.

3. Clear Cache and Data: On your Android device, go to Settings > Apps > Modivcare > Storage, then clear cache and clear data. This helps remove any corrupted temporary data that might block login.

4. Check Network Connection: Make sure your device has a stable internet connection. Try switching between Wi-Fi and mobile data to see if that helps.

5. App Updates: Verify that you have the latest version of the Modivcare app installed from the Google Play Store.

6. Try Web Portal: If the app still won’t let you sign in, try logging in through the Modivcare Member Services Web Portal at https://member.modivcare.com/ to confirm your credentials work.

If these steps don’t resolve the issue, there might be a backend problem or an account-specific restriction. In that case, you can call Modivcare’s app support line at 866-402-5752 for direct assistance.

Would you like me to guide you through any of these steps? Or do you see a specific error that we can focus on?