@VPS3 

Hi, Welcome to the community.

 - Test de debit à disparu = faux diagnostic 

Do you mean in the "Run Wifi diagnostic", there are no testing details about current internet bandwidth(Download and upload)?

If you are on the latest Deco APP version 3.3.10 for IOS, 3.3.5 for Android, it is suggested to refer to the release note here:

https://community.tp-link.com/en/home/forum/topic/581574

 -  Paramètres avancés    =  code pin  N/A

I am a little confused about this part. Can I have some screenshots?

Do you mean the WiFi password?

 -  Home Sheild Pro.         = Détection de port malveillant sur mon téléphone !!?

Can I have some screenshots of " Détection de port malveillant sur mon téléphone !!"?

If you go to More>Advanced>Port Forming, is there any port forwarding profile here?

Thank you very much.

Wait for your reply.