Access to equipment behind load balancer

Hello everyone, I will tell you about my problem: I have a load balancer (RB3011) which has a line that arrives by PTP link. On the other end it is simply connected to a modem.
The issue is that I don’t have access to PTP devices, since they are “behind” the balancer. What change should I make in the RB3011 in order to access the PTP link?

PTP IPs:

Access Point: 10.254.254.44/23
SM: 10.254.254.45/23
Load Balancer: 192.168.150.1/24
Modem IP:192.168.100.1/24

Thank you very much in advance, I remain available for your comments.