I think you just need help on the business side because it sounds promising to me. If you are truly burnt out or you are in financial trouble, then I certainly would recommend to stop. Otherwise, just take a two week break and find someone to help with the business side of things.

I think a lot of the billing stuff can be handled by Stripe or a similar service. For legal, finding a good lawyer is most of the work. After that, they will guide you through the rest.