Hi there! I’m sorry to hear that you’re experiencing issues with the DietAI app not logging food and the helper not functioning properly. Let's work through this together.

### Step 1: Check for Updates
First, could you check if there are any pending updates for the DietAI app? Here’s how you can do that:

1. Open the Google Play Store on your Android device.
2. Search for DietAI in the search bar.
3. If there’s an Update button, please tap it to download the latest version.

### Step 2: Clear App Cache
If the app is already up to date, the next step is to clear the app's cache, which can help with functionality:

1. Go to Settings on your device.
2. Scroll down and tap on Apps or Application Manager.
3. Find and select DietAI from the list.
4. Tap on Storage, then tap Clear Cache.

### Step 3: Restart Your Device
After clearing the cache, restarting your device can often help resolve app glitches:

1. Press and hold the power button on your device.
2. Select Restart or Power off and then turn it back on.

### Step 4: Check Permissions
If the problem persists, please check if the app has the necessary permissions to function correctly:

1. Go back to Settings > Apps > DietAI.
2. Tap on Permissions and ensure that all necessary permissions are granted (especially related to storage or camera access if using food scanning).

### Step 5: Reinstall the App
As a last resort, if you’re still facing issues, consider uninstalling and reinstalling the app:

1. On the Google Play Store, find the DietAI app again.
2. Select Uninstall.
3. After it's uninstalled, tap Install again to get a fresh copy.

Please try these steps and let me know if any of them resolve the issues you're experiencing. If the app still isn't working as expected, we may need to explore further options. Are you satisfied with the solution I provided, or would you like to try something else?