No links in my yahoo mail open when i click them will customer support respend ? huh yaho mail classic was gud?

i was asked to upgrade .. which i foolishly upgraded to all new yahoo mail.... but it is really full of bugs. when i attach files it says cannot attach. and when sm1 sends me a link in mail it doesnt open when i click it ... will yahoo revert us all to mail classic ?? yahoo mail beta was good. but the new yahyoo mail is worse..