@Oasiz37 I haven’t dealt with unused stations personally. The first thing to mind would be, are all the stations named? Is there anything in particular in your program that you think would trigger this? Do you use a master valve (something I do not use)? Need more information to help debug. I only have one example I am able to work with and that is a 16 station and no master setup. Is it showing up incorrectly persistently? Or does it fix if you close/reopen the web app?
Also, are you using the RPi version or the normal OS?