mac keyboard bluetooth rejected

Hey there HockeyHodgie,

Thanks for reaching out to the Apple Support Communities. For the best steps that can help with troubleshooting issues with your Magic Keyboard not connecting to your MacBook, check out this link here: If you can't connect your Magic Keyboard, Magic Mouse, or Magic Trackpad to your Mac - Apple Support

Turn the device off and on

Magic Mouse has a switch on the bottom of the device, and Magic Keyboard and Magic Trackpad have a switch on the back edge of the device. Slide the switch to turn off the device (no green is visible), then slide the switch back to turn on the device (green becomes visible).

Make sure Bluetooth is turned on

Using your Mac notebook's built-in trackpad or a USB mouse, choose Apple menu  > System Preferences, then click Bluetooth. Make sure that Bluetooth is turned on.

If the Bluetooth icon doesn't appear, or if the menu bar status continues to indicate that Bluetooth is off, restart your computer and then try to turn Bluetooth on again.

Connect the Lightning cable

Connect your wireless accessory to your Mac with the Lightning to USB Cable or USB-C to Lightning Cable, wait 1 minute, then disconnect the cable. This pairs the accessory with your Mac and charges the built-in battery. To check your accessory's charge level, click the Control Center icon  in the menu bar, then click Bluetooth.

Check for wireless interference

If your accessory won't stay connected wirelessly, there might be interference with other wireless devices. Learn how to resolve Wi-Fi and Bluetooth issues caused by wireless interference.

Keep us updated on the results after going through the steps above, and we'll continue from there.

Have a great day!