This applies to all licences, annual, monthly and trial as well.

All you have to do is: 

  1. Log in to your dashboard
  2. Scroll down to the Licences section
  3. Click the "Request to Cancel Licence" button
  4. Confirm your action

Your licence/subscription will be cancelled immediately and if there is any positive balance, it will be added to your account.
If you did this to cancel your trial licence, it will not upgrade to the monthly licence when the 7 days period is over.