As the account owner in Shopify, you can create a new staff account by sending an invitation to a staff member.
Log in as the account owner.
From your Shopify admin, go to Settings > Account.
In the Staff accounts section of Accounts and permissions, click Add staff account.
Enter a first name, the last name, and the following email address: Support@Webshipper.com
This account must have admin privileges to install the Webshipper app.
Click 'Send invite'.
An email invitation to create an account will be sent to Webshipper.