marcellus // support Nov 22, 2009
You can make upgrade or downgrade requests at any time, by visiting "My Account > Service Manager" in your Publisher console.
Please note that all upgrade requests are instantaneous, and entitle you to a pro-rated refund from your previous plan cycle.
All downgrade requests are logged in our system and automatically come into effect at the beginning of your next billing cycle.
NOTE: An upgrade request is one where the total bill amount is greater than the total bill amount in your previous subscription. Likewise, a downgrade request is one where the total bill amount is less than the total billable amount in your previous subscription.