thing is any mechanical switch, even the chinese clones are rated for 30-40-50+ million actuations, so even 10h a day of spamming a key will take several years to start oxidizing the contacts
it does happen that you get a lemon sometimes, quality control and tolerances are not that strict, they do have a robot that presses every key on a board before it's packaged but some (very few) will die within the first months. the likelihood of 2 switches failing quickly is really really low tho so idk what to think about that.
I suspect a damaged pcb, seeing as both the W and A sit on the same matrix (they will have circuits drawn in a certain way to ensure the keys around the WASD cluster can all register at the same time , for gaming reasons). so either liquid damage on the pcb or one of the microcontrollers going.
If you have a soldering iron, you can try to open it up, de-solder the bad switches and put new ones it. you won't be able to get the same outemu switches so any other switches you throw in won't feel the same as the rest, so I guess replace the entire WASD cluster with new 5 pin switches of your choice. if the board takes 3 pins instead, the extra 2 are only for stabilizing anyway, no contacts in those, can clip them off with scissors. When you open the keyboard, you will be able to see if there's any apparent damage to the pcb (discoloring, melted stuff).
Anyway, the product has a warranty, send it back and they'l prob give you a new one, I don't even think they bother opening it up to see what's wrong with it, too much hassle for a cheap product. I suggest you do this before you take to solder.
one more thing, it's not impossible it's a software bug, try updating the firmware from their website, test keys on
https://en.key-test.ru/
Last edited by ionutd; 01-28-2021 at 06:33 AM.