I'm assuming you have a V6 and not a TiVo...check here if you're not sure.
I'm unclear whether you're reporting...
1: A problem with your series links not scheduling recordings? If you can post details - your SL settings, and examples of "missed" programmes, we can advise
2: Problems with loading the iPlayer streaming app? Can you watch non-BBC OnDemand programmes (this will test your box's internet connection)? Can you load the iPlayer app manually via Home > CatchUp > Channels > BBC?
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