What Apple Smart Keyboard model do you have?
Apple Smart Keyboard Folio for iPad Pro 12.9 4th Gen MXNL2LLA
Apple Smart Keyboard Folio for iPad Pro 11 2nd Gen MXNK2LLA
Apple Smart Keyboard 10.5 for iPad Air 3 or iPad 7 MX3L2LLA
Apple Smart Keyboard Folio for iPad Pro 12.9 3rd Gen MU8H2LLA
Apple Smart Keyboard Folio for iPad Pro 11 MU8G2LLA
Apple Smart Keyboard Folio for iPad Pro 11-inch (4th generation) and iPad Air (5th generation)
Apple Smart Keyboard For iPad (9th Generation)
Apple Smart Keyboard For iPad Pro 12.9 (6th Generation)