Thanks, Iʻll try that code and do some more testing to see how it looks. Thanks, Iʻll reply when I have an update if this is resolved.

Following up: I got one more person on an iPhone 7 reporting that problem and they had this phone version: iPhone 7 13.5.1

I confirmed that my friends were able to checkout despite the numbers being invisible, so it makes it difficult but not impossible. So it’s not a glitch with the actual submit process, just with not being able to see the typed/entered Credit Card numbers, which may delay or frustrate some, and for people who don’t know me and are not “testing for me,” not seeing their card numbers entered prevent them from completing the purchase. I don’t want to lose income because people cannot enter their Credit card info to buy items on my website.

I am also checking WooCommerce support and Square support forums to see if this has happened to anyone else on WordPress.

I appreciate your help with this request.

Thanks!

Thanks, I added a child theme and updated the theme files today. I will work on setting up the jQuery as you described. I appreciate your help. I’ll respond again after testing to see if I need further assistance. Thank you!

Thanks, it must have been a caching problem earlier!  Is there a way to also make the line appear for mobile or tablet view?
Thank you.