I have developed an iOS app that acts as a YouTube Client using the official YouTube API. I've been very care to ensure that my app complies fully with the YouTube API ToS (https://developers.google.com/youtube/terms). For example my app does not save/cache data from the API and no data is sold.
However I have recently received a request from the RIAA (I am based in the UK) that my app infringes copyright laws and I must remove my app from the App Store. However as my app complies with YouTube's API ToS and YouTube complies with the DMCA's safe harbour policy am I right in saying that I do not infringe copyright laws?