adfly and twitterfeed not working anymore?

I was wondering what happend to twitterfeed method with the adfly API.
On twitterfeed dashboard i get message on every RSS: Twitter: failed to post because bit.ly was not used as a URL shortner service.

Is there any ways alternative to this, to autopost my rss to twitter account?

I know this post is a couple of months old but I've just found this via Google because this method isn't working I don't think? Can anybody confirm?