I cannot seem to find validation for fields anywhere. Has this feature been removed?

Regular text fields have validation. That's a number field you have, and validation for number fields cannot be selected. I think they need to have a default numeric validation though so I'll be forwarding a bug report ticket to have this changed.

In the meantime, you may use text box fields instead.

NeilVicente

Thanks for the quick reply. I was thinking that exact same thing, and when a test user pointed it out I thought I'd ask. I've changed all my fields to text with numeric validation. 

One feature I would love to see would be the ability to change field types on the fly. After having to delete and re-enter about 100 fields, I would have loved to click on the field and switch from "number" to "text" field. 

thanks again, this is an amazing product.