@Marvin_S Hi, sorry for the late response. I actually found the problem, it was Band Steering. Once enabled and it switches to 5Ghz it doesn't connect whatsapp calls. For some reason 5Ghz isn't...

Setup: Archer VX1800v + 2x RE605X Issue: I've tried calling from 3 different phones while connected on my WiFi but Whatsapp only says "Connecting". When on my Mobile Data call goes through it's only...