BB Software :: Can't Receive Yahoo Email

I've been having an issue receiving my yahoo mail on my device (BB Curve 8530) for about a week now and have tried everything I can think of to resolve it, but nothing has worked.

OK, about a week ago I got about 3-5 yahoo emails on my device from Yahoo Answers. I logged into Yahoo on my laptop and there were 20+ in my account, many of which I hadn't received on my device. The following day the same thing happened and the next day I received no Yahoo email on my device but logged in on my laptop to find that I had 10 emails in my yahoo account. So I went from getting only a few of the emails to getting none.

I tried a battery pull, which fixed it for a very short time, then I went back to getting no yahoo email again. I tried sending service books as well as registering via the host routing table, both gave me the same results, fixed it for a short time then went back to getting nothing at all. I delete then undelete the service books. Again, fixed it for a short time then went back to getting nothing at all. Last night I deleted the email account from my device altogether, performed a battery pull, then setup my yahoo email again. It fixed it for about 24 hours and now I'm back to getting nothing again.

In the meantime, if I send myself an email from my google account to my yahoo account, it will go through and I receive it on my device. If I send from my device using my yahoo account it also goes through. But 90% or more of the messages I receive are from Yahoo Answers, which I'm not getting. This puts me at a complete loss as there are no filters on my Yahoo account or on my device that should prevent them from coming through.