How can I manually cancel parking and what happens if I do so?
To stop your parking manually you need to click Cancel opposite respective parking.
Remember that if you cancel your parking you would not receive interest regardless of how much time has passed since the moment of parking creation.
NOTE: You DO NOT SEND any coins to MinexBank and you DO NOT HAVE the coins in the bank. All coins are ALWAYS in you wallet even when you park them. You receive reward, i.e. interest, for keeping the coins in your wallet rather than sending them elsewhere to exchanges, i.e. selling them.