There needs to be a square integration. For Apple Pay. And a subscription option where customers can enter in their bank details and set up a subscription payment. And/or have text message (not WhatsApp) that notifies each payment round

Youmin Kim customer selects product, quantity, frequency of purchase i.e. one-off, weekly, then they are billed either one-off or weekly for their order see example here: https://www.origincoffee.co.uk/products/santa-elena So this would require adding 'frequency of purchase' as an option on products page. In order for this to work, payment option would have to be automated otherwise there is a risk of non-payment