In order to successfully set up an integration with Gem to connect your customers, you need to become a Gem integration partner. To do that, please fill out this form:
https://form.asana.com/?k=hSd9ZqG-Q_G9GpELw4CITw&d=441281988402452
Important: in the "Are you planning to use a 3rd party connector to integrate?" question, select "Kombo" as the answer.
Once done, expect Gem to reach out to you with more details. After becoming a partner, you can refer to the connection guide.