GL-AX1800 (Flint) no 5GHz on Chromecast Google tv (repost)

Hello guys,
I run the setup as normal for the router and all devices like Imac and iPhone find the 5GHz but my Chromecast google tv (latest model before Google TV Streamer) and router firmware updated to Firmware 4.7.0 release 8. Can´t find it and only shows the 2.4GHz

What have I missed? I have not installed any plugins on the router or any extra.

/Erik

// I forgot to reply on my last post. Sorry to busy in life.

Including my settings.

Hello,

  1. May I know can the Chromecast search and connect to AX1800's 5GHz WiFi on previous older firmware versions?

  2. Please try config one by one: Set the channel to 36 -> Set WiFi mode to 11a/n/ac, Set BW to 20 MHz or 40 MHz or 80 MHz in turn.

  3. Can Chromecast search for 5GHz WiFi signals from other routers? Please check the WiFi configuration information of that router.

Hello Bruce,

Thanks for the tip of the channels. It seems to do the trick. Works perfect now.

/Erik