instagram photo gallery not working

When i try to make a new instagram photo gallery it doesn´t work an di receive this message from the app manager:

"Nous sommes désolé mais l'utilisateur saisi n'existe pas chez Instagram."

I have translated like the user dont exists, but it´s not true.

I´m trying with differen accounts and noone works, even the one in your example, i allwaya have the same answer.

The gallery i want to connect is: https://www.instagram.com/catabarrioest/

what´s the problem?