Adding your WFF Credentials to the Store
To add your WFF credentials to your store, log into your Shift4Shop Online Store Manager and, using the left navigation menu:
Go to Modules.
Locate the "Wefulfillit Service" module and click on its + icon to expand the selection.
Then, click the Settings button.
Enter your WFF credentials as well as the Wefulfillit ID* that you will be using to "map" your store's current shipping options.
Mark the "Enable" checkbox and click Save at the top right to complete!