1. Login to your Readyspace Customer Portal
2. Click the Services drop down menu at the left bar of the screen
3. and select the appropriate subscription (Ex: Cloud Server SG, Cloud Server US, Cloud Server MY, Cloud Server HK )
4. Click on the Server that you want to Upgrade
5. click on the More button located at somewhere top right of the screen
6. Once you click it you will see a drop down list of options.
7. Select Modify Plan
8. You can adjust the server resource under Resource upgrades section and click Continue.
9. Or you can change your plan under Change Plan section and click Continue.
10. On the next page you can select you prefered payment method and click Submit