/conv/ - Conversion Rate

we noticed a significant drop in completions specifically on mobile devices during the final step of our checkout flow. desktop performance remains stable, but the mobile progress bar seems to be causing friction. i suspect the issue might be related to how the form fields are being rendered or perhaps a specific javascript error occurring only on safari . has anyone dealt with similar issues when implementing sticky buttons in the checkout footer? we tried removing them, but that actually made the user experience much worse. i am also looking into whether certain document. querySelector('. checkout-submit'). disabled = true; logic is accidentally triggering too early on smaller screens.