Wero is a European project, but non-Euro countries can definitely join. Currently Wero is being rolled out across the Netherlands, Belgium, Luxemburg, France and Germany. But and agreement has been reached with EuroPA. https://epicompany.eu/media-insights/bancomat-bizum-epi-sibs-and-vipps-mobilepay-sign-mou-to-accelerate-the-rollout-of-sovereign-pan-european-payment-solutions

Read this article. It will tell you more about non-Euro countries