No. Unfortunately we cannot accurately track where a member is accessing our service from or what device they are using, nor do we provide IP addresses as a part of Records. This information can be valueless when the parties at issue share an internet connection or device.
If you think your co-parent is allowing someone else to post messages for them, we recommend you create a new message addressing your concerns and request that your co-parent change their account password and cut off access to any other parties.
If you think your co-parent is acting in violation of a court order, we recommend that you consult with an attorney or the court itself.