@Rethanis great support here.
@awesomedonald,
Hard to tell what exactly is happening here. Can you please open the browser with the fresh profile and ensure that it is the only window open at the time? Then visit Netflix or Spotify and test again? What I’m checking here is that any extensions or processes you have running in your original profile window aren’t interfering with the fresh profile and/or widevine.
That said, I’m not super convinced extensions are the true issue here. It would be good to test this in Chrome/another Chromium browser if you can. Additionally, downloading and testing on the Brave Beta build may also be useful (note that downloading/running/installing Brave Beta will not interfere with any other Brave installation you have on your system).