How to Upgrade from a Freehosting Account to Premium Shared hosting:
Login to Vistapanel and click the Upgrades button on the top navigation menu.
This will open a 3 step upgrade form where you can choose your hosting plan, payment schedule and free domain name.
How to upgrade a Freehositng account to a VPS or Dedicated Server Plan:
https://ifastnet.com/portal/vpshosting.php
How to upgrade a Premium Shared hosting account:
Login to your portal:
https://ifastnet.com/portal/
1) Click on My Services
2) Click on the edit icon on the right hand side of the service you wish to upgrade
3) Scroll down to the bottom of the page and click on the Upgrade/Downgrade button
4) Choose the plan you wish to upgrade to