How To Sell Raffle Tickets Through Squarespace

Hey,

I'm setting up a website for an event by a non-profit, and they want to sell raffle tickets through the website. The tickets are numbered 1001-1300, and if a user buys 3 tickets they need to receive 3 separate numbers. Numbers that have been sold once cannot be sold again. Zapier, Integromat, and Automate.io  don't integrate with Squarespace's ecommerce, so I'm a little unsure of how to best do this.

Thanks!