Fritz Fax

We are currently using Fritz Fax with a HP Officejet in our Network. The problem is, when sending an fax the recepient recieves the fax, but its smaller than the original fax. I have tried everything and looked at the settings , but nothing seems out of the ordinary.

( Eg: I send out a normal A4 fax doc…but recieving end gets a schrinked fax)