Steps to 'unblock' adfly link in facebook
1. Login to your twitter account
2. Enable the send to facebook functionality in twitter . Setting > Profile >
1. Everytime you update tweets, your tweets will be automatically sent to facebook. Any links on twitter.com usually will be shortened to t.co.
2. You need to be careful not to spam your twitter with adfly link only, you twitter account can be banned by twitter. Follow other people, update normal tweets, and communicate once in a while.
You can update your tweets using twitterfeed . I use this one.
You can use other twitter to facebook aps such as selective tweets.
You can also use the blog method like what has been shared in post Adfly Link Blocked by Facebook