Lost 2nd display parameter for Sinope TH1124zb

I have 8 TH1123zb and 1 TH1124zb…which is the only one that has lost it’s 2nd display parameter in the Smartthings app. It can only display indoor temp by default and the parameter that allow toggle to outdoor has just simply disappeared! Any info on how and why?..and how to get it back.
Thanks