It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

×
Please could you both clarify what operating systems are you using? Please note that the game is not supported for Windows 10, which, I believe, might be the culprit here.

In this case a good idea might be to try launching the game in compatibility mode directly from the game's installation folder which by default should be located here:
C:\GOG Games\Atlantis 2

Once in there please find game's executable "Game", right-click on it, and select Properties. In the properties window please switch to the Compatibility tab, and enable "Run in Windows 7" and "Run as administrator". Press Ok to apply settings, and try to run the game again using the executable file.

Should the issue persist it would be best if you got in touch with us directly by creating a Support Ticket.

It would also help us enormously in pinpointing the issue if you could attach your DxDiag report to the ticket.