WordPress.org

Who has access to view the Adoption dashboard widget?

Only administrations by default. Additional roles can be configured to gain access by using Justin Tadlocks "Members" plugin, you can grab it here.

The month views seem a little off, when I select any given month view I'm given an extra month, why is that?

This is a design decision. If you select "Last 3 Months" you're given stats for this month and the previous 3 month (4 in total).

If you'd like to strictly get the last X months for any given time period you can use this code:

function your_project_minus_one_month(){

    return 1;

}

add_filter( 'adoption_minus_one_month', 'your_project_minus_one_month' );