Hey! Have you had any problem with whatsapp calling? After installing ER605 when I try to call somebody on whatsapp it just says "connecting" and after a while it fails. Chat is working fine. Also calling works if both people are on the same wifi, but if anyone is on LTE or in a different network it doesn't work. I have enabled all the ports possible on the router, enabled Upnp, mDNS but it still doesn't work. I also upgraded firmware, did factory reset. Any ideas? It's funny that it works on iPhone but not on Android devices calling doesn't work after installing ER605