Connecting a Second controller

Hello,
I am trying to connect a second controller(both are same ESP8266) to Wled. The first one connected fine, second one will not connect. I tried 3 different controllers same issue. I connected the second controller to a different network at work and it worked fine. Can you not use 2 controllers on the app on the same network? Any help would be greatly appreciated, It is driving me crazy.

search here or discord for possible router setting problems, ESPs are a bit picky on that.