I am producing Hydrogen in a transformation module, and then I simulate a demand module to consume that hydrogen (I have already checked that both modules are using the same fuel), but the energy balance isn't connecting them.

Could you please tell me how to connect the hydrogen offer and the demand? or what should I check to fix this error?

Screenshot number one shows the module that produces hydrogen while the second screenshot shows the hydrogen demand. Even though, the Sankey diagram shows a disconnection between the offer and the demand.