Grand Total is not correct

Matrix table

The totals of column 1 and 3  are incorrect, it should be for column 1 -> 8 and for column 3 -> 492.

I use the matrix table in Power BI and has made this as follows:

Rows - Productname and Reservation no.

Colums - Name accomodation

Values - Number of persons

What do I wrong or how can I fix this