Ads on Apple Radio on a PC after subscribing to iTunes Match

I subscribed to iTunes match a year ago. Initially, Apple radio was ad-free. But after each upgrade to iTunes, it seems to become ad-laden again. I purchased a brand new PC, downloaded and installed latest iTunes, logged on, and turned on iTunes match. All my music shares fine, but it's ad-laden. I have listened to ads for Fabreze more times than I can count. Apple tech support was totally useless until they seemed to inadvertently disconnected me -- twice. Anyone have any ideas?