Just finished looking around the forums and I think I get the context now.
I can only infer some things:
Site traffic is causing errors. Possibly a lot of people are trying to buy the game you were trying to purchase. The web server is possibly having a hard time handling all these requests. Now this is only inferred because we don’t really know the site traffic, and we don’t really know the capabilities of the server
An actual random error. Hey it can happen.
But yeah, the best course of action would be to follow what @PeteMcc said or if it isn’t against the forum rules, then try to PM Ionin.