Replace Swicom box uhd

Hello, I have a question, my mother has a Swisscombox UHD that no longer works properly, now she gets a free Swisscom Box 21 so far so good, now the lady told me that I have 3UHD boxes at home that I should also replace? Because they wouldn’t be able to go anymore in January. Do I have to replace them or can I keep the UHD boxes? Many thanks, regards Peter

Yes, I have 3 uhd boxes that run stably, so I don’t need to change, especially since I have an infrared dongle for Logitech, then I don’t know whether they will still work. Greetings Peter

Thank you👍