How do I pair my Bluetooth keyboard and device?
Ensure that the keyboard has a full charge battery and the Operating System of the device is up to date. Forgetting the Bluetooth and simultaneous pairing attempts.
Turn off the two devices and wait at least 10 seconds to turn them back on.
The tablet Bluetooth connectivity should be open and available to other devices. Press the combination keys FN + C — making your keyboard discoverable on your device's Bluetooth settings.
While in the middle of pairing and are asked to enter a pin, this might [actually] be asking you to create one instead.
Try to put in an eight-digit number on the tablet screen keyboard. Input the same combination on the keyboard. Press return and try to see if this connects without a problem.