Didn't see any post about enter key not working but maybe a setup or wrong software.  The enter key in the keyboard letters works fine but the enter key in the number area does not work
it lights up with the rest of the keyboard but when hitting it does not respond.    \
 
Thanks

Can you please provide a screen shot of the firmware under the settings tab?

Assigning the numpad enter key to a macro does not work

Gatau
Assigning the numpad enter key to a macro does not work

If you haven't already make sure you update to the latest version of Unleash RGB there is a firmware update that may be able to fix your issue. 

Hoggle
I would first try hitting default in the Unleashed software and I would pull the key cap to make sure you don’t notice any physical issue. After that I would seek an RMA. It would probably be best to contact support and get the ball rolling on an RMA. My ideas are just what I would try but really unlikely to really fix the problem.

I hit default and I removed the key cap and put it back, also trying to click it without key cap, but no result. The button feels and looks normal to me.

I am having the same problem. Brand new keyboard, plugged in and it updated the firmware immediately after installing the software. Enter key on Numpad still does not work even after the update. Tried on a different computer and experience the same behavior. Removed keycap for said key and pressing the switch directly does not make any difference. Have tried factory reset numerous times with no change. Firmware version 1.27, Unleashed software version 1.0.7.0. 
 
Edited post with screenshot 
 

I don’t believe mine came with an extra switch, just keycaps. Either way I wouldn’t know how to remove it.

No problem. I did double check the box and confirm the same. It only came with extra keycaps.

I submitted a help ticket and will see how that goes.

Please contact support for this issue. It doesn't sound like a firmware issue, as most people's enter key works fine. If there are a few of you out there, it might mean that there's a quality control issue they need to address and you getting in touch with them for an RMA will help you get a working keyboard and them figure out what the issue is so less people have it.

maybe check if there was an update with the software

WoW, i have to give a shout out to EVGA... i shipped my RMA keyboard late Wednesday and received the replacement to my front door Saturday (less than 72hrs!!!). The turn around time was incredible, i dont think i ever seen a RMA complete that fast. Excellent customer service too. Keep up the good work EVGA!!!! The ENTER button on the new keyboard works and so does everything else!

Howdy EVGA crew. I also have the dead on arrival right side/numpad enter key. I bought my keyboard from Amazon instead of EVGA directly. Should I work with y'all for a replacement or them? 
 
PS I love the keyboard, sorry that so many of us are having this problem :-/

I have the same problem, brand new Z20 and Enter from numpad doesnt work at all. I have latest software version and firmware v1.28
Unfortunately I could not find this keyboard in my country and I had to buy it from the UK, which in turn, no one sold it to my country and someone had to buy it from me. Then he puts together how to get to my country, and after other transport costs (almost doubled its purchase value) and almost a month, I get the product and I have the biggest disappointment, the Enter on the numpad does not work.
I made a ticket, I see that it takes a while for someone to answer, I gave all the details (even clip ) now I'm curious how the rma will go. If I am forced to send it at my expense to who knows which country, I'd better destroy it.
When I bought it, I missed the look of the switches, I had remembered that they are hotswap but it seems that only Z15 ...

jnickj6
I have the same issue. For over a year, I have been without the number pad enter key.  I keept he Unleash software updated, the keyboard firmware updated and have tried multiple resets. I have even had to reinstall WIN 10 several times because I'd try out Win 11 and noped out of that each time because there are several features I use in Win 10 are missing in Win 11.  I opted to reinstall instead of "rolling back," so I could mitigate any "sneaky left overs" from Windows 11.  So, the installations were clean and that number pad enter key still does not work.  Has anyone actually gotten it to work or have you all given up and done RMA? I feel I've had this one too long for an RMA, as I bought it in July, 2021.  
 
Cheers,

Same problem here. Just saw that you posted this yesterday, and it happens that I gave a call just yesterday. I was told that there might be something wrong with the hardware rather than software, and maybe I am supposed to ship that and ask for a replace. If that is the matter of the hardware, I think it is the company's or the manufacture's fault...