Recently I explored this article to fix Yahoo mail not receiving emails error. It provides the complete solution. Some of the main solutions are provided Below:- 

1. Check Spam folder: Look in your Spam folder to see if the emails are being marked as spam.

2. Update filters: Check if you have any filters set up that could be moving the emails to another folder.

3. Check blocked addresses: Check if you have accidentally blocked the sender's email address.

4. Check account settings: Check if your account settings are configured to receive emails properly.

5. Check internet connection: Make sure you have a stable internet connection.

6. Disable ad-blockers: Disable any ad-blockers that might be blocking the incoming emails.

7. Contact the sender: Ask the sender to confirm that they have sent the email and to check if it has been bounced back to them.

8. Contact Yahoo Support: If the above steps don't resolve the issue, contact Yahoo Support for further assistance.