To use any of the above modules, you need to have an Invoice Ninja Pro account or higher. If you do not have one yet, you can create one at InvoiceNinja.com.
To connect your Invoice Ninja account to Integromat, follow the general instructions for Connecting to services. After you click the Continue button, Integromat will prompt you to enter your API token. To obtain the token, log into the Invoice Ninja service and go to the API tokens section. Click on Add Token, enter any name and click save. A new token number will be automatically generated. After you paste your token into Integromat, you can continue creating your scenario.