Make a request to the Connect URL as shown in this example:
curl --request POST \
--url https://connect.flatpeak.com \
--header 'Content-Type: application/json' \
--data '{
"connect_token": "<connect_token>",
"route": "session_start"
}'
The response will be one of the predefined pages listed under Required pages in the left-hand menu. Your application must be able to handle all of these pages.
Make sure you subscribe to the connect.session.complete webhook event so your system is notified when a customer finishes the Connect flow.
Contact support for implementation guidance.