Magic Keyboad and iMac24 problems

Hello!

Some keys on the keyboard do not work (y u i o h j k l n m .) with my iMac 24 M1. However I have linked the keyboard with a MacBookPro M1 and an older iMac 27 and on both the Magic Keyboard works perfectly.

I have also tried another Mac compatible keyboard on the Mac 24 with no problems.

The keys on the Magic Keyboard only fail when linked to the iMac 24.

I don't know how to solve the problem. Any help, please?

Thank you very much.

Gabriel