Same issue here. 1-9 not working on the magic keyboard. All other keys working. No water damage, new batteries, no other defect. It was working fine one minute then afternoon, not working. Ive unpaired, then couldn't pair it again for days as the numbers are needed to pair. Then a week later, tried it and it worked for mins, then back to 1-9 not working again. Very strange. Looks like many people have this issue, as lots of people on other sites asking also but no solution found from what I can see. Has anyone here found one? Id love to think its been a short cut hit in error which has turned them off? and it can be reversed but cant think what it would be? Tried the mousekeys option, shift-clear (although i don't have a separate number pad, its the 2 x battery magic keyboard I have, 2nd generation i think)
Anyone else found anything that works?