I understand that you are trying to export a Co-Simulation FMU with a 32bits windows library.
Tool-coupling FMU gives you the capability to integrate Simulink and Simulink models into third-party software. It contains 64bit binaries for all platforms and this FMU is mainly used as a communication protocol to exchange data between third-party software and Simulink. This feature is available for standard Simulink license but also requires FMU users to have a Simulink license.
To export standalone Co-sim FMU the Simulink Compiler license is required. This feature gives the FMU users capability to run FMU without a Simulink license.