MLB Extra Innings Package

I've asked this question before, even getting a customer service representative on the line, but never received an acceptable answer. I pay for the HD service each month & have no problems with the service, with the exception of the MLB Extra Inning package that I subscribe to. For what ever reason, I can only receive the SD version. When I access on via the internet on a computer I receive the HD feed. I can't seem to get an answer. Any ideas? Thanks, Jack