There's some good discussion about this in gloves off, but basically Andy identifies as cis but (apparently) still experiences horrid gender dysphoria, has publicly transitioned and was AFAB.

I'll add that Andy has claimed in the past that Andrew Blake started out as an alter consciousness in female-identified "Amy's" mind, ie, a product of psychosis. Whom "Amy" demanded the truth never, ever be mentioned to, because althought "she" was aware of him, he was not aware of her, or that he was in an AFAB body. But that individual has gotten treatment for their supposed mental illness and is still Andrew Blake.

If all this makes your head hurts, it's not just you. Andy lies so much his lies form the mental equivalent of a tangled ball of yarn.

Personally, I think the truth is:

-Andy is trans (duh)
-Andy experiences gender dysphoria
-Andy is not and has never had a true psychotic break from reality
-Andrew Blake and Amy Player are the same person/consciousness
-Andy claimed otherwise in order to have people never bring up his past to him, so he'd never have to take accountability for it