I've solved the issue for me - I acually used another account I totaly forgot about for my main...
Here are a couple of things you can try out though that helped me to get past this problem:
1. Make sure to login with your account ingame even though it says that there were no characters transfered on the website. Mine transfered correctly now, however the website doesn't show that.
2. Make another account and try to generate a 2nd token for the account in question. If it doesn't go through because you've uised the token allready - at least you can be sure that the transfer went through. A couple of people said that this helped them to solve their issue ... maybe it does so for you too.
3. Don't be like me and make absolulty a 100% sure that the account in question is the correct one!
Good luck to you guys, I hope you can get past this problem soon!
