I guess you mean blue, right?
“Blue” isn’t mentioned in the manual at all, so what should it mean?
Btw, there are already some posts with similar problems after updating the Fibaro app to v3.1.5 and suggestions to solve these problems. So please have a look at this thread and use the search function first in the future…
If the modules were correctly wired before, then I can’t imagine it’s a wiring issue now. Of course, an app update can affect the function, but it has nothing to do with the wiring.