As the Yahoo mail works better on the latest web browsers and if the web browser is outdated then some features of the Yahoo mail will not work properly.
Two things can be done to fix such problem
•Download web browser
1.Firefox
2.Chrome
3.Safari
•Secondly, update the web browser
1.Firefox
2.Chrome
3.Safari
If you are using these browsers then they will help you to download and update the web browsers.
Further, more help can also read: Create Yahoo Mail Account
or Click Here
Yahoo Toll-Free Number
+1-877-618-6887 (USA)
+44-800-051-3717 (UK)
+61-180-082-5192 (AUS)
Other than this just contact Yahoo helpline
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