This site is devoted to software development, we don't provide technical support for company products. And most especially, we do not provide tech support for paid products - all that would do is encourage companies to "offload" tech support to the web and that helps nobody except accountants.
I'd suggest you start with the company who produced it:
Arena Simulation[
^] - given that you have to "contact the sales department" to find out how much it costs, it's not going to be a cheap product, so you should get what you have paid for: technical support when you need it from the people who should know the product best!