Hi @Urszula Richards81 , I'll let someone else confirm but I believe you just toggle the Test Mode button in your Stripe Settings in Siteglide as long as you have keys set for both:

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Hi @Urszula Richards81 , I'll let someone else confirm but I believe you just toggle the Test Mode button in your Stripe Settings in Siteglide as long as you have keys set for both:
Hi @Urszula Richards64 , perhaps someone can confirm but in the form itself under the payments tab and when using basic payment form you can pick the currency: