Then why doesn't nexon introduce this feature, I'm pretty sure I and other new maplers don't know that a meso market even existed. I never said that I wanted my money back, I know that I can't get it back because I didn't trade nx legally, but tons of people don't. My teacher said that terms of service was made so long because they don't expect you to read it. You can't blame me for being ignorant. Someone just stole $20 from me and he's not receiving any punishment whatsoever, that doesn't make any sense. Justice still plays a role even if both parties are participating in something illegal.
No, in fact I distinctly remember watching a People's Court episode where Judge Milian explained that conducting an illegal transaction (in that specific episode, it was a drug trade) does not require the law to do anything; you're on your own as far as legal recourse goes. And, as described in the code of conduct, Nexon specifically will not compensate for illegal transactions.
Terms of services are long because they're legal documents, and legal documents are long and detailed because they have to be.
The meso market function was introduced only a few months ago in April:
I can forward feedback about making the system more visible or adding a tutorial, but conducting direct cash trade has always been against the rules for GMS servers, and neither I nor a GM can help you resolve your issue because of that. You can report the player who scammed you, but it's unlikely you'll receive your money back, I'm sorry.
This can depend on a few factors. For example, if you started the update from the launcher while the maintenance was ongoing.
Many people find it easier to patch via the GameLauncher.exe file located at C:\Nexon\Library\maplestory\appdata
I would recommend performing a full restart (on Windows 8 and Windows 10, you must do this manually via Command Prompt run as an administrator using the command "shutdown /s /t 0", or you must disable Fast Startup in the settings menu) to clear any troubles, followed by updating via the game launcher. When you're not playing, open the launcher and select the gear icon, then select "repair installation". Let it run overnight or while you're out and it should go back to normal.
Windows 8/10 full shutdown instructions: