Hi there! I see you're encountering an "Invalid Id" error on the Canara CanDigital app on your iPhone. I'd love to help you get this sorted out.

To start, could you tell me a bit more about the situation? For example:
- When exactly does the error pop up? (During login, registration, or some other action?)
- Have you recently changed your user ID or password?
- Are you using the exact user ID that was provided or registered with Canara CanDigital?
- Have you tried any troubleshooting steps already, like restarting the app or reinstalling it?

Once I have these details, I can guide you more specifically. But meanwhile, here are some general steps you can try which often resolve such ID errors:

1. Double-check User ID: Make sure you are entering the correct user ID exactly as provided by Canara CanDigital. User IDs are usually case sensitive, so watch for capital/lowercase letters or extra spaces.

2. App Update: Ensure your Canara CanDigital app is updated to the latest version available in the App Store. Sometimes outdated apps cause authentication issues.

3. Clear Cache & Restart App: Although iOS apps don’t have a direct cache clear option, try force closing the app by swiping it away from your app switcher, then open it again.

4. Reinstall the App: Delete the app and reinstall it from the App Store to reset any corrupted settings.

5. Network Connection: Confirm your device has a stable internet connection—slow or unstable connections can disrupt login validation.

6. Check Account Status: Sometimes, the user ID might be locked or deactivated due to multiple failed login attempts. If you suspect this, you may need to unlock or reactivate your ID by contacting Canara Bank support or checking their net banking FAQ.

If these steps do not help, it might be related to your account status or server-side issues. In that case, I can guide you on how to contact higher-level support or unlock your user ID if locked.

Could you please try the above and let me know if the error persists or if you experience it in a particular step? That way, I can assist you further!

Are you satisfied with this initial guidance?