i have 2pcs oc200 i've been using it for almost 2years but recently it goes offline frequently for about a month now i dont know if the firmware upgrade cause it. its hard to connect to cloud i can't

got my new er605 for my oc200 because i always have offline issue with my controller, I adopt the er605 in my oc200 but the pronlem is that i can't access default ip of er605 so i reset it ( er605 ) a