A page says I do not have access

That is a permission, not a fault — your account has not been given that area. An organization admin can grant it from the users page. Access also depends on your organization plan: a role can list a permission the plan does not include, and the page stays closed until the plan covers it too.

1. That is a permission, not a fault — your account has not been given that area.
2. An organization admin can grant it from the users page.
3. If an admin says you already have it, check the plan — access needs both the permission and a plan that includes that area.