Alan
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Have you installed patch 1.41? And patch 2.1 for the expansion, respectively. There have been changes in how statistics are tracked on Ubisoft's servers, and the game is unplayable without these patches.
If everything is installed, you should contact Nival's technical support with a detailed description of the problem, your computer's specifications, and preferably screenshots of the issue.
Тьма - это то, что позволяет смертным не забывать, как ярок бывает свет.