I actually played one of those Korean mmorpgs that that an English version available ~2005 and I remember their website being a mess. It got wildly popular in the west to a point where the server started lagging and was down frequently, so they set up a second one.
Then the cheating got out of hand so they added some anti-cheat software, and shortly after they wanted people to verify their identity by sending a scan of their id/passport. This is when 99% of players left.
This is why all the Korean mmorpgs required Korean social security numbers but what ended up happening is Chinese gamers started to steal Korean identities to cheat and farm items which lead to its downfall, they simply could not deal with the large number of Chinese users.
Even source codes were stolen and Chinese mmorpgs would appear with the exact same gameplay but different skins and names.
In the early days of the internet you could download a generator written in simple visual basic im not sure how it was able to do this but worked well enough to signup and play on almost all the online games
Eventually was made illegal and what ended up happening was a huge korean social security numbers being traded online in Chinese forums (who had economic incentives to farm, hack, cheat items from korean mmorpgs)