Hello! I am still on version 3.5 and have never had any problems. I have all my forms set to link back to my client site after they are submitted. I've never had any issue until now. When the form is submitted, I do receive it, but instead of saying the form has been sent and redirecting to a new page, it just shows a white page. I've tried changing it so it doesn't redirect and just shows a sent message, but that also gives a white page. As far as I know I haven't changed anything on my end. Any suggestions?