No, FulGaz is not compatible with this trainer.
The common definition for a “Smart” trainer is that it’s resistance can be controlled automatically and it contains a power meter of some kind. In this instance Tacx simply named it “smart” because it can send watts. All the resistance control is via a lever, so FulGaz can’t change the resistance with the gradient. That would be Ok if it used the standard bluetooth protocol for power, but it doesn’t do that so we can’t even get a wattage number out of it.