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in the extension page on chrome you have to enable "developer mode", then click on "load unpacked" and pick the extracted folder.

ok, ext loaded, and seems to be working on spotify

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but I couldn't get anything to play. I checked the ext and got this error when trying to connect..

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I disabled the ext, refreshed spotify and then the music can play. maybe my laptop just sux.

test just logging in on website again when the extension is installed, it should automatically log you in there too.

then wait for a song to play past 60% and you should get a new keychain popup after you switch to a new song asking you to post the scrobble as a custom.json