Apple Magic Keyboard with Numeric Keypad - US English / doesn’t hold charge

This keyboard is not working and I don’t know why. It just stopped holding a charge and couldn’t get it to connect to my Mac. I’m not sure what’s wrong with it. But it’s in great physical condition and it has a keypad, which is sort of rare because when you buy them new they come with one that doesn’t have a keyboard, you have to buy it separately. This model does NOT have the touch pad. Here’s what Apple says about it: “Magic Keyboard with Numeric Keypad features an extended layout, with document navigation controls for quick scrolling and full-size arrow keys for gaming. A scissor mechanism beneath each key allows for increased stability, while optimized key travel and a low profile provide a comfortable and precise typing experience. The numeric keypad is also great for spreadsheets and finance applications. And the built-in, rechargeable battery is incredibly long-lasting, powering your keyboard for about a month or more between charges.”  I’m sure it could be restored somehow - make me an offer 👍🏼