Quote Originally Posted by carlwhat View Post
there are plenty of posts on this issue.

in addition, according to my records, that specific error message was changed ~19 months ago.

your customer does not have javascript enabled on the browser he is using to purchase your product.

i would suggest updating to the latest version. and buying your customer a new computer...

best.
The new computer comment seems about right. I'm yet to hear back from my customer - however I do know they were using safari, and I found a comment online about square SDK not working with versions 11 and under.
I was able to replicate the error using testingbot.