When you view the station does it state HD either in its name or the station artwork?

What stations have you tried? Only Sonos-owned and operated stations will play in HD

I’m not sure what standard that provides. If you’re using it: do all the speakers in the group support HD? What if you just play to your Five? 

Yes Sonos own Radios 

I just updated all the systems but still HD label not showing?

I’d submit a diagnostic from your system and contact Sonos Support. They should be able to evidence why the HD badge is not showing.