some options are disabled

Sounds like you’re trying to use features that are available with the Pro version.

What should i do to get the all fields enable??

You would have to buy a license for the Pro version.

I have a site in xxx.com/demo in need the site in xxx.com.IS it enough to copy all the files inside demo and paste it outside and change the permalinks from xxx.com/demo to xxx.com

I have a drop down value and it has a-121 b-122…. in drop downs.if i select that i have another textbox below it hold value 121 or 122 …based on selection.how can i achieve if i want to add script for this means then where i add and how i achieve

how to execute php code in wordpress.is there need any plugin??

Hi kiddosorna,

We try to keep support in our help desk. When you have questions about Formidable, could you post your questions there?
https://formidablepro.com/help-topics/

i need to customize the form i need some of the dropdown values should come from db like that.how should i change

It sounds like that will require custom code. We can give you more specific instruction if you post in our help desk:
https://formidablepro.com/help-topics/