Could you please enlighten me on the matter of KuCoin's restrictions? Could you tell me which nations are prohibited from accessing or using the services provided by KuCoin? I'm curious to know if there are any specific geographical limitations that I should be aware of, given the global nature of cryptocurrency exchanges. Is there a list available that outlines these banned countries? Additionally, could you explain the reasons behind these bans, if any, and whether there are any potential workarounds or alternatives for those residing in these restricted areas? Thank you for your assistance in clarifying this matter.