Todo bien, comprado desde MX, ya llevo varios codes y sin problema y riesgos, puedes actualizar y hasta agregar correo electrónico para sincronizar en la nube.

Bought this and worked a treat. Process very easy and straightforward. Very happy for now.

Worked perfectly.

was confused first, as the microsoft download still showed " downloading microsoft 365" but as i opned a new excel file, it claimed that this is working for version 2019.
Also activating "online" in the Excel programm worked without any problems. Could even connect it with my microsoft Konto.

worked with out a problem

Todo ok. En cuestión de segundos he tenido mi clave y funcionando.