Hello,
It seems you have disabled "Lable" for each custom field.
Please select the field and go to its option as shown in the screenshot.
Image may be NSFW.
Clik here to view.
Please check the "checkbox for Label" > this will shoe you the Label for the form field as "Custom" Rename it as per your requirement and Disable the Label again.
Image may be NSFW.
Clik here to view.
Re-upload the site and you should be all set.
Regards
Vivek
