Hi.
I will configure conversion on button click and send it to Facebook. I will use Google Tag Manager to insert Facebook Pixel code and Facebook conversion tag. I'm certified Google Tag Manager and Google Analytics specialist, you can check out my profile. It won't take much time, by tomorrow morning you will be able to view conversions in Facebook Analytics (of course if any conversion actually happened). After implementation, we can check conversion firing together. Looking forward to hear from you soon.
Best Regards,
Khusrav