Bad enough that the form is created in a module the form creation is disastrous because no interface exists.
The fact that you need to create the form in the module manager reduces the working area to a tiny space. The non-existent form building interface doesn’t make it better but worse.
You must feed all form fields in a pseudo HTML language and must know all special attributes. Fast form making is not possible.
I propose a better form maker COMPONENT.
mod_qlform is based on Joomla! form generation via xml (not html). It is a proper way of generating a form for people who want much (from a little module) and who are willing to work a little bit. Our docu is good and I'm sorry you didn't take the time to ask our support,