It is very simple. Just go to the "Account" > "Plans" section of your management panel and request a change of plan. At Arcadina we offer you the plan change that best suits your old plan in terms of price, but with more web space and other advantages. You will have to make the change. And then you can finish adjusting the new plans to your liking.
For example, if you have an old Silver plan we propose you to switch to the new Web Professional and Business Aperture plans, which together are equivalent to the first one and have a similar price. And if you have a Bronze plan we will switch you to the Web Professional plan. And in this case you will then be able to subscribe an Aperture plan for only $9 USD more (taxes included), which until now you could only do by subscribing the old Gold plan, which was much more expensive.
You will always come out better off no matter what old plan you have.
And if you have more questions ask us.