Conlusion 1: avoid the seller Marie Melody.
Conlusion 2: communicate with sellers only through Amazon. We responded directly to their emails and have no usable traces with Amazon.
Conclusion 3: Philips - HF3510 / 01 - Awakening Light with LED Lamp, 20 more expensive, is much better designed, more reliable and sold directly by Amazon. The choice that I recommend after 1 year of experience.