Stripe field not showing on Divi popup

Hi,
I’ve created a booking form with a final stripe field. This works fine when inserted normally in any page, but doesn’t appear when included in a popup created with Popups for Divi. In the example page I’ve inserted both options, so it doesn’t seem to be a SSL or cacheing issue, but rather the popup not loading the stripe iframe.
I’d appreciate any support on this.
Thanks!

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