Been nearly 2 months, & I'm STILL getting a 504 error that prevents me from removing audio that's blocked worldwide on the same, ONLY video it's happened to. 3 songs blocked worldwide, video blocked worldwide.
Tried every "fix" @TeamYouTube told me to try & NONE of them worked.
Thanks for the info. As a next step, please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues.