My trial version ran out, and when I get the license, it is only for 6.0.0 but the rest of the people I work with are using 5.45.01. So i can't compile my code

-Hi my trial version ran out for HEW IDE.  I have a license, and got the license number, but this is for version 6.00.00.  The people I work with are using 5.45.01.  So I need the license to work for 5.45.01 but it is not working, when I try to enter license number.  It says "Error: key is intended for a different version of the product"