Instabuilder + getresponse form integration

Hello, i’m not sure if this is the suitable place to ask.

I have build a landing page using instabuilder 2.0 plugin. Then insert the getresponse webform code ( with start as inside.

The problem is, when it published, the form is duplicated into two forms (which should be only one).

so i found that

is duplicating in the D.O.M. Does anyone have any ideas on preventing this duplicating script?