The first time I paired my Express 4k+ out of the box the red light came on on the remote but the tv screen now won't go beyond the pairing screen (after the "get started" screen). The unit flashes one long, one short blue. I've got my payment account set up at Roku. My tv is an older Panasonic and doesn't have any choices on the HDMI setup except to control on/off of other devices (no COC or other). I haven't gotten any e-mails from Roku.