RE: Form field doesn't appear
Hi Luisy,
Please check the following two points:
1. The option ‘Update contacts/ leads’ in the right-top corner of your form just like the following picture shown.

2. The settings ’Contact mapping’ and ‘Lead mapping’ of your form field.

• If the option ‘Update contacts/ leads’ is set as ‘Contacts and leads’, all the active form fields can be searched and selected.
• If the option ‘Update contacts/ leads’ is set as ‘Only contacts’, only the form fields mapped with Contact can be searched and selected.
• If the option ‘Update contacts/ leads’ is set as ‘Only leads’, only the form fields mapped with Lead can be searched and selected.
Hope this will help you.
Regards,
Clofly