Unable to activate Apple Watch unlock for iPhone when i'm wearing a mask

Hi there,

After many searches, I can't find a solution. I'm unable to activate this feature, system told me to check that the Watch is unlock ( it is ), that the detection for the wirst ist activated ( it is too ), and that the iPhone need to be unlock ( it is )

I've tried till now many solutions : reset the iPhone, restore the iPhone, then unpair and pair once again the Watch, nothing works :(

If someone could help me, it will be great.

Many thanks in advance.

Regards from Zürich ;)