Cannot deactivate my Trados Studio 2019 license (error 403)

Hello! I'm trying to deactivate my Trados Studio 2019 license in order to install the upgrade to Trados 2024 that I recently purchased, but I keep getting this error message: "Error de desactivación. No se ha podido conectar al servidor de activación. Compruebe la dirección del servidor de activación en la configuración del proveedor. Error en el sentido remoto: [403] Prohibido".

Could you please help out? No idea of what the problem may be :( I've seen a similar post but you just logged a support case for her so I cannot see how this was solved. Thanks a lot in advance!!

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