A sexual orientation refers to the attraction that an individual feels, and pansexual is a sexual orientation. Therefore, being pansexual - with ‘pan’ being a derivative of the Greek ‘pas’ for ‘all - means being attracted to people of all genders.
Anyone of any gender can be pansexual and can find people of any gender - apart from cis men - to date on HER.
Pangender, however, is a gender identity. Gender identity is an individual’s personal sense of their own gender. If someone is pangender, that means they identify across all genders, taking in all or some of them at once.
Pangender people also can use HER to meet other pangender friends who understand their lived experiences.