[Plugin: Ninja Forms] "Processing" loop after send

Hi Guys

I done a search and found a few other thread facing this issue, although none of which helped me

I set up the form easily, but when I hit send, it just loops around Processing for ever.

Where I differ from others is that when I disabled the “Submit via Ajax” option, it worked fine. I understand that Ninja Forms uses Ajax with or without that option ticked so this feels a bit strange to me.

For the sake of testing, I have re-enabled the Ajax option so you can see what I mean and have a play. You need to go to my site and visit the: table reservation section to see.

The site

ps. Based on being a one page site, it is important to me to have the Ajax option working.

Thanks