Hello @Drixter ,
Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.
AFAIK, Exchange Partners can only see Egress traffic on graphs for Peering Service. This is by Design, as we currently dont have data on Ingress traffic for Exchange peering.
So you should be able to see the Egress traffic. If you are not able to see the data on your graphs, we would need to file a support ticket for further investigation. Since you do not have paid support, we will try and help you get a one-time free technical support.
Thanks,
Gita