Leave a Testimonial form not working

I can manually enter a testimonial and it will show up, but if I leave a testimonial using the form, it doesn’t show:
https://simonamanenti.com/leave-a-testimonial

I read some other help posts and even tried turning all other extensions, but it did not help.

Thank you,
Greg

https://www.ads-software.com/plugins/testimonial-basics/