You’re not entering the correct ID. Double-check the letters and numbers; you must have made a mistake somewhere. Especially check the O’s and 0’s, as this can be confusing.
Tu ne rentres pas le bon ID. Vérifie bien les lettres et chiffres tu a dû forcément te tromper quelques par. Vérifie surtout les O et les 0 celà peut porter a confusion.
I have written to support@chuwi.com and they asked me the serial number a week ago. I’ll wait a few and if they don’t answer, I’ll try with service@chuwi.com.