Josh!
I tried clicking on OK and did not work (I get an error). But well, the new .zip that you attached today works perfectly. So, the problem is solved and thank you so much.
Also, I have a last question regarding this post:
I'm not sure about the purposes of ASK/OOK, MOD and SYS_CLK pins and how I can manipulate them. I know that sys_clk is an clock output to provide any external device with a 13,56 Mhz clock signal and ASK/OOK to select ASK or OOK modulation, but I would like to learn more about these 3 Pins and them functionality. Also, i would know if I should connect these pins if I'm trying to test the TRF7970A working as a tag (Card Emulation).