I have used Yahoo mail for about 20 years. No issues until the last 6 months. When I open the app on my Android I don't have any emails between 2am and 11am. I have logged out and back in, uninstalled, reinstalled, force stop, paid $12.99 to talk to customer service which was a complete waste of time and money! I am missing very important emails! Unless I know someone has sent me an email between 2am and 11am and search for it, I do not receive it. UGHHHHH! So frustrating!