This Forum Beta is ONLY for registered owners of D-Link products in the USA for which we have created boards at this time.
He has comcast with xfinity modem/router. https://www.xfinity.com/support/articles/wireless-gateway-enable-disable-bridge-modeAlso according to meye app, the port used should be the mobile port in the DVR. The HTTP port and Media port (usually 554 for RTSP) may work locally but in the app remotely use the mobile port. https://learncctv.com/app-for-h264-network-dvr-live-view-free-download/