Sorry to hear about that. Did you contact our customer support in the meantime and were my colleagues able to help you? In case your issue still persits (I hope not of course), kindly ask you to check the following:
Change Day took place on April 20. Maybe you only need to refresh the channels, or even need to completely restore your Mediabox. to the factory settings.
Hope you will be enjoying a comfy TV weekend, especially with the current weather.