I’m getting an Error 640 when submitting a form from certain computers.
I’ve checked cookies, cleared cache, enabled pop-ups. But I can’t work out why some machines work, and some don’t.
It’s an old form in the Legacy section, but I just created a new form in a Campaign, and I have exactly the same issue i.e. works on some machines, not on others.
Appreciate if anyone knows where to look. Thanks.