Only guests

[kalastaja]

No need for registration of customers, i.e. no need for prompting. How do I proceed?

[RodG]

No need for registration of customers, i.e. no need for prompting. How do I proceed?

2 options spring to mind

1) Disable *all* payment methods except PayPal Express.
or
2) Install this mod https://www.zen-cart.com/downloads.php?do=file&id=1416

Cheers
RodG