Hello @William_D, Thank you for your answer! The reason why I added https: is because I was working in local, and the URL defaulted to file://static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.min.js otherwise, which was not found (ERR_INVALID_URL). I removed the https: and pushed my very simple example to Firebase hosting and it works on both Safari and Chrome: https://sandbox-b8703.web.app I can now pinpoint that the problem is linked to the implementation of Constant Contact forms using a frame, which is what I am doing on the site I'm building with Wix. Website: https://sylvieuxe.wixsite.com/troubleshooting Frame source: <script> var _ctct_m = "b03f8a6b1d133cddd01f4209ec067828"; </script> <script id="signupScript" src="//static.ctctcdn.com/js/signup-form-widget/current/signup-form-widget.min.js" async defer></script> On Chrome: popup shows up Safari: nothing Same with the inline form: https://sylvieuxe.wixsite.com/troubleshooting/newsletters It works fine on Chrome, nothing on Safari. Let me know if you can spot what the problem is with this implementation. If not, I'll follow your piece of advice and contact support. Many thanks! Sylvie
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