Yes, this is most likely a DNS issue — the current firmware 1.1.0 does not accommodate custom DNS. I’m already working on firmware 1.1.1 which will allow custom DNS and should fix this issue. In the meantime, as suggested earlier in the thread, you can use your router’s DHCP reservation feature to bind a fixed IP address to the controller — there is no need to set static IP on OpenGarage, instead, leave it in DHCP but use your router to set a fixed IP to it.