Signers signature is not in the right place when the document is returned to me.

Hi there,

I'm having an issue when sending my document for electronic signature to another part to sign. 

I go to "send for signatures" , and then "prepare the form" , I drag the appropriate boxes to the fields that I need them to fill in , then i send it to the email address of the person I need to sign it.  - no problems here.

However, the signature of the other person always comes back and it is not in the signature box where I need it, sometimes the signature is 12 pages away from where I placed the signature box. 

I'm using Adobe Acrobat DC

Can someone please tell me what I seem to be doing wrong ?