Hello Worzel,
The procedure is as follows:
Go to the website of shipsim.com (https://www.shipsim.com/),
then, click "on log in" in the top bar, left side.
This opens a dialogue window where you must submit your user name and your password.
When you have done so, a page opens called "Account Management".
Below, you find 3 options:
- Change password
- Account details
- Orders & Downloads.
Under Orders and Downloads you'll find the games you bought for download.
Best wishes
Volker (aka Eustache le Moff)