How do you turn H5P exercices into a public mode?

Hi there!

I'd love to join the Learnybox LMS plateform and thus integrate the many H5P exercices I created. 

The thing is the iframe code isn't accepted by their plateform as it shows "vous n'avez pas accès à ce contenu. Essayez de vous connecter"(meaning: You don't have access to this content. Try logging in." A Learnybox technician suspects  my H5P exercises are in private mode. I don"t recall seeing a public or private options in H5P. Please tell me I am mistaken and how to change the settings. 

Many thanks for your help!

Nathalie