First you need to log into STORM
Once logged into STORM, you will be taken to the STORM dashboard.
From the STORM dashboard, click on Websites.
Click the cog icon next to your website to manage your website.
Click on Databases
Click on the PHPmyAdmin button
This will open PHpmyADmin, click the + to the left of the database to expand the tables
Click on the WP_options table (not the +)
This will open the table, the rows you want to edit are the siteurl and home
Double click on the URL to edit it and then type in the new domain and press enter, do this for both URLs
That's it the URL is changed now