Ah, is your Stripe account live (i.e. in livemode with payments activated)? We'll look into make this smoother, but right now you'll have to leave testmode to continue.
I keep getting "An unexpected error occurred when trying to use instant verification."
When activating your Stripe account? Could you screenshot and send to [email protected] and CC [email protected]?
Although, from reading the docs, a lot of the products that I'm interested are still "Coming Soon" (confusingly a different verbiage but identical in meaning to "Private Beta"?): - Transactions - Other data-powered products