I’ve had my Chuwi (USA charger) for about a month now. Charging seems to work fine.
The BIGGEST problem I have with my Chuwi it is that loses WiFi internet connectivity (I’m using Windows10) at home. Disconnecting and then reconnecting to the same WAP restores the internet connectivity. My one Atom generation older HP tablet has a similar problem: they both use a Realtek WiFi chip. The Realtek WiFi drivers are whatever came with the tablets and subsequent Windows10 updates.
Otherwise the Chuwi works fine: I had NO expectations of any support from Chuwi. I asume they’re basically a factory with VERY minimal dedicated customer support, especially to an English-speaking American.