Unfortunately, you cannot use a Z3X box card with an Easy JTAG Plus box to get activation for the JTAG functions. The activation cards are typically specific to their respective boxes Retro Bowl and cannot be transferred between different types of hardware. You must purchase a separate activation card for the Easy JTAG Plus box to enable its features.
Regretfully, using an Easy JTAG Plus box and a Z3X box card together will not activate the JTAG features. House of Hazards activation cards are usually unique to the boxes in which they come and cannot be used with other kinds of hardware. To use the capabilities of the Easy JTAG Plus box, you need to buy an additional activation card.