Yeah, I have absolutely some problem - WireGuard client on Keenetic Hopper (KN-3811) have no hanshake with WG peer. But if I use this config on laptop or android (using this Kennetic like router) - its work absolutely fine.
Firmware - 4.2.6
But I'm shure this WG client correctly work on 4.2.4 firmware, but after update I dont have chek it correctly.