When I visit your link I think I understand.
You allow insert placemarks from frond end, and in this case I don't show Addition HTML text.
For create new placemarks I can suggest not use this feature.
You can read in my docs for Google component how integrate RS Forms with my component. And insert placemarks from it into my tables. And disable change placemarks from front end, in this case this field will be displayed.
Of, if you don't need create new placemarks from front end - disable feature and enter your data from admin section