Hi,
If you’re still receiving emails on your iCloud account but not on your Yahoo account, it doesn’t always mean your account was hacked. It could be due to settings, filters, or access issues. However, it’s important to act quickly to make sure your account is safe.
Please try switching to a different internet connection. Then open an InPrivate window by pressing Ctrl + Shift + N, and sign in to your account using the link below:
https://account.microsoft.com/
Send yourself a test email. Did you receive it in your inbox?
If emails are still not arriving, check your Blocked senders list and mailbox storage to make sure it isn’t full. Sign in at:
Go to Settings > Accounts > Storage. Expand both Microsoft Storage and Cloud Storage. Also, confirm the sender is using the correct email address.
-Make sure you’re signed in with the correct Microsoft account.
-Check the Junk, Other, and Archive folders.
-Go to Settings > Mail > Rules and confirm no rule is moving or deleting messages.
To be sure, as an additional security measure, please review “How to help keep your Microsoft account secure”: https://support.microsoft.com/account-billing/how-to-help-keep-your-microsoft-account-secure-628538c2-7006-33bb-5ef4-c917657362b9