Hey, guys, I've just had the same problem here's how it got solved. Basically, you'll have to download the separated laucher, add a permission for your antivirus to allow the launcher and copy the files created by the launcher to the game folder.
1 - Register and validate account;
2 - Download game installer;
3 - Install game;
4 - Execute game;
5 - Register UserId with credentials from the first step;
6 - Start game and error No908 occurs;
7 - Download laucher separately;
8 - Execute launcher in a new folder (your antivirus may block it - change the settings to permit executable);
9 - After the laucher finishes updating, copy all files from the Laucher folder and paste them on the game folder;
You should then play the game normally. At least, it worked for me 🙂
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