Hi Eberhard, thanks for reaching out and sorry to hear that you have issues with one of our Logitech product. We apologize for delay in response.It would be helpful if you can provide the below details. So that I can assist you with further support options.1. Issue that you are facing with our Logitech product.2. Serial number of the product.3. Name of the device.If you have any further questions, please get back to me and I will be happy to assist you.
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