I have been having problems with my paid Yahoo account for months now. Can't search my own email. I call support, they reset the settings, it's fixed for a day

I have been having problems with my paid Yahoo account for months now. Can't search my own email. I call support, they reset the settings, it's fixed for a day or two, then it breaks... hit repeat. And all these new error codes. When did Yahoo mail ever need an error code?! Garbage!