If youre stuck in Yahoo Mail issues, then follow the steps to troubleshoot them:
1. Run a scan on the Yahoo account.
2. Move to the tool of Yahoo Mail Quick Fix.
3. Choose the issue you're having.
4. Enter an alternate email address.
5. Then, Enter the shown verification code.
6. Click on the Create Request.
Go for Yahoo Customer Service instantly if theres no improvement in the situation. https://www.numbersfor-support.com/yahoo-customer-service-number/