Hi! I understand that you lost two accounts while trying to connect to your YouTube channel through the Noise app. To help you better, could you please clarify a bit more about what happened? For example:

- Are you having trouble signing into your YouTube accounts within the Noise app?
- Did the accounts disappear from your connected apps list, or are you completely unable to access them?
- Are you seeing any error messages when trying to connect to your YouTube channel?

Once I know a bit more, I can guide you through some steps to recover or reconnect your accounts safely.

In the meantime, a common approach when there’s trouble linking YouTube accounts is to check the authentication and permission settings. For your iPhone running iOS 18.6.2, here is a general approach you can try:

1. Sign Out and Sign In Again:
- Open the Noise app and sign out of your connected YouTube accounts.
- Then, sign back in to refresh the connection.

2. Check YouTube Account Access:
- Use Safari or the YouTube app on your iPhone to ensure you can still log into these YouTube accounts directly.
- If you cannot log in there, you may need to recover the Google account associated with your YouTube channels. Google has a recovery process if access is lost or hacked.

3. Reauthorize Noise App Access to YouTube:
- Go to your Google Account’s security settings on your browser (accounts.google.com).
- Under “Third-party apps with account access,” make sure Noise app is listed and has the necessary permissions. Remove and re-add if needed.

4. Update Your Noise App and iOS:
- Make sure your Noise app is updated to the latest version available in the App Store.
- Also, check for any iOS updates—you’re on iOS 18.6.2, which is current, but ensure everything’s up to date to avoid compatibility issues.

If the accounts you lost are actually separate Google accounts associated with your YouTube channels, and you’re having trouble recovering access to those Google accounts themselves, Google’s account recovery process is the best way forward. There are official guides and videos available that explain how to recover Google accounts, which are necessary for YouTube access2 1.

Could you share which of these steps you've already tried or if you see specific errors? That way, I can help you better.