Amazfit Watch faces

Hi there, I just bought a new GTR 2 to replace my Amazfit Pace which passed away after 3 and half years of honourable service.

I am encountering some minor issues:

- Even if I have paired with my phone (Xiaomi A3) bluetooth and have enabled the call function in Zepp app, I can't use it for calls: during a call if I select the watch nothing happens, the call remains on the phone. What could the problem be?

- When I receive a Whatsapp message, the watch does not show any text, it just vibrates and I have to manually go and open the notification; can this be changed in some way?

Hy, I have the same problem with calls : I can have incoming calls on GTR2, but not the calls I passe. On the notice, it seems to be clearly written like this, "you can have incoming calls on the watch", it doesn't speak about the other calls ... but maybe I'm wrong (I hope lol !) : does someone have a solution ?