Cannot allow a maintainer to edit a project page

The user didn't consent to the Git agreement (http://drupal.org/user/304306/edit/git). That is the only thing I found different, as the other co-maintainer (toleillo) has consented to the Git agreement (http://drupal.org/user/237344/edit/git). Is toleillo effectively able to edit the project page?

I am not sure if that is the cause, but the sandbox project is using the filtered HTML input format, to which every authenticated user has access, on drupal.org.

The other cause I can think of is that only the user who created the sandbox project is able to edit the project page. To verify if that is true, it is enough to check if the other co-maintainer is able to edit the project page.

Thanks kiamlaluno!
Once I've agreed the Git Agreement and created a git user, I can edit the project page.

My guess is that being a co-maintainer or a maintainer of a project requires to agree in the following statements, independently that the co-maintainer will commit any code.

• I will only commit GPL V2+-licensed code and resources to Drupal code repositories.
• I will only commit code and resources that I own or am permitted to distribute.
• I will cooperate with the Drupal Security Team as needed.
• I have read and will adhere to the Drupal Code of Conduct.
• I agree to the Drupal Code Repository Terms of Service.

While some of the statements are specific to committing code, adhering to the Drupal Code of Conduct is not specific to writing code.
It could also mean that the normal case being considered is that co-maintainers would write code, even if I have to admit I myself saw users who are co-maintainers for a project without to have any intention of writing any code.