709 form

HI 
I worked with Turbotax full service expert and efiled my returns. Turbotax expert told me to send the paper copy of 709 form along with efiled documents.
1) I am trying to understand if  efiled documents also need to be sent with 709 form?
2) To whichaddress i should send them?

After the refund i am unable to see the chat history , it disappeared, so lost the detail of address.