LG VX-7000

I'm trying to use my VX7000 to send/receive emails from my Yahoo! account. To do this, I first purchased the Mobile IM application from the "Get It Now" menu. After reading the help for Mobile IM, I found out that I need to enable Pop access on my Yahoo account. It turns out that to get Pop access, I had to purchase the Mail Plus option on Yahoo! for $19.99. Unfortunately, even after enabling Pop access, I cannot retrieve any emails, although I can send out emails. When I try to "Get Email", I get the following error on my VX7000:

"-ERR Error logging in.
Please visit http://mail.yahoo.com..."

Any idea why I'm getting this? I seem to have setup the account correctly. Yahoo! tech support tells me to contact the phone vendor. I recall t...
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