The following steps will allow you to connect your Salesforce org to the LogiSense Billing instance:
Navigate to the LogiSense Integration tab within Salesforce
Click on the Edit button in the top right
Enter the LogiSense instance URL in the Endpoint URL field. This should be the same one you entered in Remote Settings
Set the Client Id value to: 044b8ad6006845c29446b2f18e5b5909
For User Name and Password enter the LogiSense Billing credentials supplied by LogiSense
Click the Test Connection button
Once you receive a Success response, click Save