When you buy the game from ManaGames, the Key info is stocked on ManaGames server so it's very fast to log in.
When you buy the game Steam, the ManaGames server has to :
1- check your Steam Identity
2- check that Steam Identity actually owns TE2013
That's 2 calls to Steam servers, and if they're busy (which seems to happens particularly in the evening at GMT+2), it can take a very long time & even time out. There's no much I can do on my side to avoid that (at least without building some complex cache system).
Did you notice if the error was more or less frequent depending the hour of the day ?
PS: I always rename the subject when it doesn't describe what the topic is actually about, because I don't want the Forum users to lose time opening topic they're not sure what they are about.
== Mana Games ==
>> I don't answer Private Message, except if it's really a _Private_ topic <<