Hello I have owned the device for a short time and I am thrilled! However, I have now discovered that the R400, R700 and R800 models have a security hole in the radio protocol that is now more than three years old and allows attackers to gain control over the receiver plugged into the computer and thus make any keyboard entry (see: https://www.heise.de/security/meldung/Angreifbare-Logitech-Presenter-Hersteller-tauscht-gefaehrliche-USB-Empfaenger-aus-4423627.html). As can be read in the linked article, it is possible to replace the vulnerable receiver with a new one. My question: Can I exchange my current receiver directly at Digitec or do I have to take the "diversions" via the manufacturer?