Matrix Decomposition Using Crout's Method

Background of the project.

Matrix A and Matrix B are given. Then you need to multiply the two matrices to have Matrix C.
Now after getting so, use Matrix A and C to get B using matrix decomposition and forward backward substitution.
All of the values are Complex numbers.

Problem is that I cannot get the same Matrix B.

Possible problems are, matrix multiplication, crout's, or forward backward substitution.
But I've checked it, using different examples, and I'm getting the right answer. I wonder what's the problem.

Hope you can help me through this. Thank you!