In any case if you Booker Connection to Pandaflow has expired you will need to reconnect your Booker account in Pandaflow.

‍

1. Login to Pandaflow
2. Go to Connectors
3. On the Connectors tab - One of the connections will be Booker. Just Click Reconnect and connect Booker. Note: We recommend you not reconnect your Booker Account with your personal login account.

[During the setup, you would have created a new Admin user in Booker.  You will need to re-connect the connection with that Username]

Once it is reconnected, your workflow should start working.