Impossible to reach signature in outlook 365

Hi,

I've an issue with fat client Outlook 365.

I can't reach the signature button ...

I follow https://support.microsoft.com/fr-fr/office/outlook-se-bloque-lors-d-un-clic-sur-le-bouton-signature-c70b36c2-66ca-401c-ab45-f29a46495d02

and all about cleaning regedit support.

But it does not work...

May you help me please ?

Regards.