Boneco Warm or Cool Mist Ultrasonic Humidifier U350 - Top-Fill

I bought four humidifiers from Boneco so far, and this one failed after only 11 months after the purchase.The water refill/recycle symbol just stays on...I tried all the solutions on the amazon.com https://www.amazon.com/ask/questions/TxJFP44U37Y7O1/ref=ask_ql_ql_al_hza and it remains unsolved.

Very quiet, 5 L capacity which lasts much more than one night. Disperses humidity seemingly quickly and effectively - stops dry coughing at night when normally humidity levels drop. Not sure if the LCD % numbers are correct but device does change humidity in rooms of 50-80m sizes. Easy to use via touch buttons plus appears to have some heating function for warm mist. . No visible mist coming out (this can discolor nearby furniture (whitens) over time) from the 2 swivelable outlets, unlike another popular “M” brand I used which is bulkier and noisier. Has a so called antibacterial “Sonic” baton inside which is quite expensive to replace but hopefully lasts many months. Has also a filter piece inside (for kalk?) which can also be replaced… Overall bought as highly recommended by UK reviews and meets expectations…