Skin color coupons are typically sold from the cash shop. I don't recall any events that have given out skin color coupons, so if there have been events there hasn't been many.
You can … (more)buy maple points using mesos through the meso market; in any town, use the Quick Move button and click on the lady in the pantsuit. Enter your PIC and you'll be able to purchase maple points at a rate decided by an average of the rate in your server. The meso market is not available on Reboot, however. (less)
An issue where disconnecting during certain parts of Act 2 in Monad caused a character to become stuck will be fixed. Use the portal in Base Camp, and select 'Act 2'. You will be asked if you want to return to where you were.