By providing the service that you state carry over to all devices.
I purchased the Yahoo+ that is supposed to carry over to all devices and it does not. I have deleted the app on my iphone and reinstalled and it still shows ads and asked me to upgrade to yahoo+ so after free trial I will cancel the service.
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Hi there. If you're still seeing ads, please check our help article to resolve this issue: https://help.yahoo.com/kb/remove-temporarily-hide-ads-yahoo-mail-sln15803.html
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NoneYaBus Yay commented
Also, states 24/7 support is included so when I went to support page it wanted me to pay extra for the 24/7 support.