What browser are you using? Care to take a look in Chrome's console for any errors and submit your findings as an issue?
I investigated your issues page and the previous comment may be related to the following issue.
https://github.com/kyranb/SoundCloud-Feed-Cleaner/issues/10
After loading a fresh copy of the page, the tab appeared.
With that said I opened an additional issue. Chrome console log did not appear to provide any relevant information.