I ordered a Duo-simkaart through my Odido account. My goal is simple: I need two SIM cards tied to the same phone number for use in different devices - I'm fully aware they can't be used simultaneously, and that's fine with me.
I selected the option called "Bestel een Duo-simkaart" priced at €35.59 and completed the order. However, shortly after placing it I received an SMS notification saying that my old SIM card would no longer work.

Is this just a generic/incorrect notification, or should I actually expect my existing SIM to be deactivated? That would completely defeat the purpose of ordering a Duo SIM card in the first place. Has anyone experienced this?

