I had this occur when I had country blocking of certain countries turned on on my firewall. The store runs through xsolla.com and, from memory, I had the Netherlands in my blocking/country filter. Unblocked that and the Store started working for me ingame. Source: over 1 year ago

I interpreted it this way too. https://xsolla.com/ seemed to be a platform-independent transaction/progress tracker. Source: almost 2 years ago

Companies like Xsolla exist. Pretty much any game with micro-transactions are likely using the services of such companies and are probably already tracking what you do within the game. They basically exist to increase monetization within games. Source: about 3 years ago

That being said, I worked with https://xsolla.com/ a while back. They were responding fast on support questions and are a specialized provider for gaming. You also notice that when reading up on their api (naming for example is tailored to game domain). Source: about 3 years ago

If you still want an estimate you can check on Steam Spy. Source: about 1 year ago

I think Valve will shut it down once it learns about the monetization. AFAIK that is what happened to https://steamspy.com/ when they introduced paid subscription tier. - Source: Hacker News / over 1 year ago

If you still want to see numbers, you can try with Steam Spy with VN available on steam. Most of the developers say that those numbers are false. Source: over 1 year ago

Research popular game genres, for example on https://steamspy.com, and find a genre that currently sells well. Source: almost 2 years ago

Steam Spy - must have tool for anyone who wants to get some data about Steam games. Source: almost 2 years ago