Login to Your Profile (make sure you use the email you used to buy the products), you should see the product you bought listed there. This will include the Order Number, allowing you to install the product. If you need to download the product, use the Extended Download Service to download a new installer for the product. Please make sure you turn your AV, or Windows Defender OFF before you download, as Captain Sim products often get false flags for viruses/trojens, but they are free of both.

One thing. Did you take note of the order page you got after making the payment? As in something like a screenshot, or taking a note of the Order Number? As the Order Number would have been provided so you could install your newly purchased product. I know this is not the same as the confirmation email (which includes the same info).

Is it possible you incorrectly entered your email address when making the order? You should have received the email by now regardless of whether it's in your inbox or your junk file.