Approval process transparency. They require 3 months of payment processing history to approve new businesses but don't disclose this anywhere on their website. I spent a week going through their verification process — fixing my refund policy within 14 minutes of their request, answering a detailed questionnaire — only to be rejected at the end because I'm a new business without processing history. Impossible catch-22 that wastes founders' time. If you're launching a new SaaS, don't bother — they won't tell you upfront that you don't qualify.