I've experienced unreliable form forwarding to PayPal on submission with AJAX turned on with my various forms.
I can't peg what's causing it, as one day it worked and I was sure AJAX was on, and now today, it's not working.
Can you help me troubleshoot, and let me know what to look for or how to test for AJAX conflicts?
I've gone through my most used forms and turned AJAX off, examples below.
AJAX is turned off on this form - http://www.itarsenal.com/services-shop/concierge/buildyourown/
AJAX is turned on, on this form - http://www.itarsenal.com/services-shop/website-maintenance-backup/wordpress-maintenance-backup-plans-checkout-monthly/