I never said you need a good payment method when running vouchers. If I did I mispoke. You can absolutely run vouchers with no payment method
What does this mean Will? I imagine a good payment method being any payment method that passes AdCenter's verification right. So, I'm not sure how to interpret that because when they don't pass verification accounts get banned. But Rob replied to your post by indicating vouchers could work alone - I'm so confused because I'm pretty sure vouchers don't work alone.