Hope you are doing good today.

It seems like the issue is specific to the URL. That’s the issue occurs when you load the site via HTTP instead of HTTPS.

I could replicate the same when I loaded the above /payment-form page via:
https://websiteURL.com/payment-form

The Credit card field loads fine when I access the same page via https, ie
https://websiteURL.com/payment-form

This would be the expected behaviour as the Stripe payment gateway only supports transaction via HTTPS URL.

You’ll have to ensure the website only loads via HTTPS, you can use any of the listed SSL plugins below to force the website to load via https, so such issues don’t occur.
https://www.ads-software.com/plugins/search/force+ssl/

I hope this helps. Have a nice day ahead.

Kind Regards,
Nithin

Thanks for your help!

Thank you for letting us know!

I understand that this solved the issue so I’m marking this ticket as resolved. but if you have any follow-up questions on this case or still need assistance, don’t hesitate to mark it unresolved again and let us know how can we help.

Best regards,
Adam