Hello Bosco!Change your formula :
From this >>
=INDEX((B4:D5,G4:I5,B9:D10,G9:I10),VLOOKUP(C12,N2:O3,2),VLOOKUP(D12,L7:M9,2),VLOOKUP(B12,L2:M5,2))
Into this >>
=INDEX((B4:D5,G4:I5,B9:D10,G9:I10),VLOOKUP(C12,N2:O3,2,0),VLOOKUP(D12,L7:M9,2,0),VLOOKUP(B12,L2:M5,2,0))
or,
=INDEX((B4:D5,G4:I5,B9:D10,G9:I10),MATCH(C12,N2:N3,0),MATCH(D12,L7:L9,0),MATCH(B12,L2:L5,0))
Regards