Unfortunately, the plugin has a bug with the basic value of water outlet from containers. Initially, I decided to solve this using a "constant" called "Defaulty amount(Dont changing it)", unfortunately it did not work as I expected.
I will try to fix it soon.
As for increasing the scope of water distribution to a larger number of sprinklers, it is currently possible. The reason it doesn't work on your server may be the bug described above.
My advice would be to reduce all vars to 10
"Defaulty amount(Dont changing it)" : 10