No anonymous payments
When on (default), guests must sign in before opening checkout. When off, they can review the order then sign in to pay.
No anonymous payments
When on, guests are sent to sign in before opening checkout. When off, guests can review the order on the checkout page and are prompted to sign in when they actually pay.
Where to find it
Admin → Settings → Payment → Member features → No anonymous payments
Setting key: toggle.nap
Default: on (unset = require login first)
Common problems
Bounce rate on Premium page
Forcing login too early. Try off if you want people to see the price first. Still requires Login enabled / Registration enabled under Settings → Main.