Does Allow me to create more fields

I have created many forms by this plugin , But right now i have quite lengthy form.
https://vizzwebsolutions.com/themes/absoluteevents/formtesting/
I have more 20fields more to add . But this not allow me to add more. It shows in backend but when i save the changes get lost. and not show in front end too. Not allowing me to add lables etc etc. Please help is possible

https://www.ads-software.com/plugins/ninja-forms/