Hi Sophie!?
This is Roman, Ecwid by Lightspeed Customer Care Team.
Sure, we support Afterpay. By default, Afterpay is available when you’re located in Australia or New Zealand. We enable it for other locations upon request.
Find more information on Afterpay and Ecwid in this article: https://support.ecwid.com/hc/en-us/articles/360009672159-Afterpay
In case you have any questions, feel free to reach out at ec.support@lightspeedhq.com. We’ll be happy to help!