Help With Certificates Please

I am having a Struggle understanding what I have to do to send a Face from Galaxy Watch Studio to my Galaxy Active . I have done it many times in the past , But not for a while . Sadly I am at a stage in my Life where I am not getting more clever . Is there a simple fix for this Certificate thing . I can not make Head or tail of the Topics already on the subject . I Have made a bit of a mess with the password as I have Got a new one for my Samsung Account . Is it an Issue these days because I am working on WFS ? I do not have to Build the faces there .
To add I have also recently gone over to WIN 11 .
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