First, please do not post all in bold. It is considered aggressive and shouting!
Did you originally buy Simplitec Power Suite from Magix? If so, it may be listed on your Magix account page, which can be accessed here. Log in and then go to the My products page. If the purchase is shown there it should also include your serial number.
If it is not listed there and you have no email record of the purchase, I think the only thing you can do is to go to the Simplitec Power Suite web page and click on the Support button. However, I see that if you do that you are directed back to this forum!!! So then I think you must use the Support button in the header of any forum page to contact Magix support and explain the situation and ask if they can help you.