The product seems to hit a really important use case (I have created my own SaaS products in the past, and subs, authenticaation, and permissions are huge PITAs). One suggestion - your homepage copy is very developer oriented and 'feature' oriented, whereas it could be less technical and more benefit-oriented. I think changing the copy / adjusting the focus could go a long way. See Outseta.com (I have no affiliation…
I agree with you re: the copy and being more benefit oriented. As is probably obvious I am a developer-first and a marketer a distant second.
Also appreciate the pointer to outseta