Hi Partner,
1.Make sure the correct fields are populated.
The field from this reationship() is 'Company Name' in contact entity, which is customer type, so you can select account or contact into it.
-In the form, the field show as 'account name', you can select value from account or contact.
2.Ensure that the relationship chosen is the right one
Account and contact are related through many OOB relationship.
You should ensure that they are related through 'company name' field if you want to show value in the word template.
Check this field value of these contacts related to current account.
3.Edit word template correctly:
1)Add fields firstly:
2)Select the entire table row in the template,right-click the relationship containing the content control fields, and then click Repeating.
Test Result:
I hope you can mark my answer verified if it is helpful! If you have any questions, please feel free to contact me.
Regards,
Leah