The app Wps Wpa Tester shows wpa in red and can't be hacked, if it shows wps/wpa in green it can be hacked.
What is the hardware revision on yours routers? Lets call it the green and the red one.
I guess yours green is just like mine the Hardware Version: C1 / Firmware Version: 3.02
(and now beside my WPS vulnerability, my router now resets it self, apparently when I connect my S8 plus with it in 5Ghz. I might downgrade it back to 3.01)
I used to love this router, but now, I canīt even recommend it.
I can't use the support chat because the website doesn't work properly, and I'm resistant to call them, because I'm pretty sure they will have no idea what to say and will "bs" me as usually they do.
If America headquarters can't answer this, I really don't think they will know it here.
It seems to me to be easily issued releasing a new firmware.
Thanks