You must have asked the Community whether it is compatible with these devices before buying. Alternatively, I suggest that you first check the compatibility list before buying a technical device. If your device is not included, then there is a good chance that it will not be recognised. This could be the case for you. If your device is compatible, then the problem is probably due to its use. There are also instructions for this. No need to ask a question in the Community, just read and understand the document. If this does not work, then I recommend a visit to the German primary school or the adult education programme at the Migros Club School, German for beginners. Greetings schweppes