I bought the Cube Pocket Foldable…
I bought the Cube Pocket Foldable Bluetooth Keyboard with Touchpad from Nillkin's official store. After about seven months, the "a" key started failing intermittently. It stops responding for 30 seconds or more at a time, and the fault also breaks shortcuts like Cmd+Tab on iPadOS. That makes the keyboard unusable for everyday typing. I contacted nillkin.com via the support address, under warranty and sent a photo, a video of the fault, and a clear description. I've since sent three follow-up emails and haven't had a single reply. Other buyers seem to have reported similar problems with the q, a and z keys. The keyboard was compact and handy while it worked, but a hardware fault with no warranty support isn't acceptable. I'd think twice before buying from Nillkin until they fix their after-sales service. Next step is a charge back from my credit card company.