The problem with stuff like this is the transparency involving the whole update procedure. We got detailed patch notes for mundane things no-one cares about and there was no information concerning reduced adena rates and L2Coins not working like before. Moreover, the patch notes were released 1 day prior to the update deployment, this by itself is unacceptable for a major update.
There are 2 possible scenarios, 1)the plug and play patch they got from Korea has other settings which they didn't adjust before the live release or 2)they stealth nerfed these things.
In the first scenario, why wasn't the problems resolved in last weeks maintenance? Changing the adena rates is like 30 seconds, the L2Coin drop might be more complicated and might need a custom fix from Korea. But you should at least inform us about the situation, something in the lines of" We have confirmed the issue and we are waiting for a patch, we are sorry for the inconvenience", and send some mail ingame with some compensation.
In the second scenario just tell us the truth, that this is how it's going to be, so people can make their decisions.
It's unprofessional to change the rules of a game without any announcement, it shows disrespect towards your player base and customers, your communication skills are severely lacking at best. Company politics need to seriously be reconsidered IF this business is to remain afloat, @Juji @Hime transfer this complaint to the upper ups, don't just accept this situation and remain in the sidelines while this whole project inevitably sinks.