Name field wrong

Hi there,
when i add a Name field to the form and set it to required i see the red star behind the label

Its like

Label*

field1 field2
first name second name

But i dont need the laben because the sub label is describing whats this fields for. Can you tell me how to set the red star to the sub label ? I dont know why this name field is so wired because the label is important just for mail, telephone field etc but the name field got a label and also a sublabel.

https://ww.wp.xz.cn/plugins/custom-contact-forms/