sharing activity on facebook wall no longer working

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Lately I've been having issues with sharing my activity on my facebook wall. Most of the time, spotify won't share my activity on my facebook wall, sometimes it randomly shares 2 songs in a row. I think it has something to do with spotify connect but I'm not sure about that. settings on spotify and facebook both should be right. it's srsly bothering because my friends use my activity feed to discover new music.

would be great if anyone could come up with a solution!

thanks in advance;)