Hi! I see you're having trouble with the Benjamin app giving you a "session expired" message when trying to sign in. Let's get that sorted out together.

To start, could you tell me if this happens right after you enter your login details, or does it occur after you’ve been using the app for a while? Also, have you tried any fixes so far, such as closing and reopening the app or reinstalling it?

In the meantime, here are some simple steps that usually help with session expiration issues on Android apps like Benjamin:

1. Clear app cache and data: Sometimes temporary data can cause login issues.
- Go to your Android device's Settings.
- Tap Apps or Applications.
- Find and select the Benjamin app.
- Tap Storage.
- Choose Clear Cache first.
- If that doesn't help, try Clear Data (note: this will reset the app and you might need to log in again).

2. Check your device’s date and time settings:
- Incorrect date/time can cause session validation failures.
- Go to Settings > System > Date & Time.
- Enable Automatic date & time and Automatic time zone if not already on.

3. Ensure network connection is stable:
- Switch between Wi-Fi and mobile data to see if connection issues are causing interruptions.

4. Update the Benjamin app:
- Make sure you’re running the latest version from the Google Play Store.

After you try these, attempt to log in again.

If the problem persists, please let me know if you receive any other error messages or if there's anything unusual with your account or device when this happens. We can then look into more advanced troubleshooting or check if there are server-side issues.

Are you satisfied with this initial guidance? I’m here to help further if needed!