I just got my Yeelight Libra2 lightbars. I set them up, download the Yeelight app, created an account, and then tried to add the light bars to Google Home using + → Works With Google → Search for Yeelight.
First I notice there are three options, Yeelight, Yeelight Pro(SG) and Yeelight Pro(US). I am in the US, so I tried Yeelight Pro(US). It prompts me to log in, and I log in successfully with my newly created account, but then I get the message “could not reach Yeelight Pro(US). please try again”.