Yahoo mail not responding error may appear due to small snags like your device has no internet connection or due to server error. Now let’s see how you can fix this error.
1. Try to access your Yahoo mail on another device.
2. If you found that there is a server down the error, try to fix it.
3. Contact to Yahoo mail customer care team via Yahoo Technical Support which is 24x7 active for your help.
For More Information click on this link:-
Yahoo Customer care number