Yahoo Mail Blackberry can't read? Not user friendly.?

How can I make it like the old Yahoo Mail Classic. This new one really disrupts my life.
I can't read old emails or download old attachments after I search them.

Its not user friendly keeps asking me to download FireFox/Safari I can't I'm using a Blackberry 9360.
I'm from South Africa but there is Chinese writing randomly on my inbox.

Please help me, tell me how to send a complaint to Yahoo! Mail technicians