Hello, thank you for reaching out to Microsoft Q&A.
Since this is a 65% layout keyboard, the number 1 key appears to be stuck in a function layer mode.
Have you tried pressing Fn + PgUp or Fn + PgDn to activate the number layer? You can also try pressing Fn + Esc to turn off the function layer mode on your keyboard.
If you are still having issues, share the exact model of your keyboard, I can look up the specific key combinations required to activate the number row properly.