To unlock the function keys on your Bluetooth keyboard paired with your tablet, you may need to check if there is a specific key combination on the keyboard itself that can toggle the function lock. Many keyboards have a dedicated key (often labeled as "Fn" or similar) that, when pressed in combination with another key (like "Esc" or one of the function keys), can unlock the function keys.
Since the Mouse Keyboard Center program is not available on the tablet, you might not be able to change the settings directly through software. If your keyboard has a manual or documentation, it may provide specific instructions on how to toggle the function lock without the software.
If you are unable to find a solution through the keyboard itself, consider reaching out to the manufacturer's support for assistance on unlocking the function keys or switching the pairing between devices. They may have additional methods or tools that can help you resolve this issue.