Redistribute IP in OSPF

Hello, I have the following problem. I have a FortiGate and a tunnel set up between two companies. I receive two IP addresses via OSPF for routing, as we use OSPF. The problem is that the other party has set up an access list and they only receive the IP 192.168.0.136/32. The issue is that this network is on my FortiGate. How can I send them this network? I tried to set up port forwarding using a blackhole; I activated a public IP and set up port forwarding from 192.168.0.136 to 10.185.195.15. They receive this IP but cannot establish a telnet connection. Can you help me with a way to make the /32 network accessible via OSPF? Below are screenshots of the configuration. Friends, I’m waiting for your help, I really need it.