Phil D - Using signal k and signalk-venus plugi...

Using signal k and signalk-venus plugin. Was working fine with cerbo gx but I added another cerbo gx for a 2nd battery bank. They are both on tje same network with different IP addresses but there is a clash between the 2. Even unplugging the new cerbo I cannot now get the 1st one to contact.

Any pointers on how to resolve please?