Why am I unable to connect my angel list profile to LinkedIn

Hello people

  1. I added my GitHub profile to LinkedIn using add another section feature.
  2. In the same way I tried to do it for my angellist profile but LinkedIn denied saying - ‘Sorry, we were unable to retrieve information about your link. Please try another link.’

So what should I do to Make I correct?

This is my LinkedIn profile . If anyone is interested in connecting

And This is my angel-List profile