Nakama on Google Compute Engine

I finished the 2. part of this tutorial about setting Nakama on Google Compute Engine (https://blog.heroiclabs.com/setting-up-a-game-server-using-nakama-on-google-compute-engine-part-2-a28cf8a0fdb2) and I have a question. How can I open the Developer Console UI after this part? I tried to browse for {my instance IP}:7350 and :7351. For 7350 it found blank page and for 7351 nothing was found.

Ok I solved it by myself, I didnt have firewall rule for the port 7351. So to answer my question - just rewrite the tcp:7350 to tcp:7350,7351.