ScalaHosting does not offer free trials, but all shared hosting accounts come with a 30-day money-back guarantee. If you wish to continue using your web hosting past this duration, you do not need to take any further action.
You may, on the other hand, decide you wish to upgrade your hosting plan. Upgrades apply to both shared and Virtual Private Server (VPS) hosting. To do so, access your Client Area and process the request through the Billing link.