If you have a sponsor code from a sporting goods store, league or association - you can get a TeamLinkt Pro Plan for free (a $70 value).
If you've already created your team:
Login to your account from the web at app.teamlinkt.com
Go to the Dashboard and select the correct team from the dropdown menu
Click Settings
Click Apparel Partner in the upper right
Select 'Enter Your Own Code', enter your code and hit Save