Right.

I'm back on the latest version to rule out any older code issues that have already been corrected.

I can check out just fine using this version also. I do note that the hidden form on checkout_confrimation is present, but instead of quotation marks, I have html quotes " as follows

Code:
<input type="hidden" name="square_webPay_tokenResult" value="{&quot;details&quot;:{&quot;card&quot;:{&quot;brand&quot;:&quot;MASTERCARD&quot;,
Does anyone know why I'm seeing it like that in source & could this be causing an issue?