In your Hubspot Instance:
Go to Settings (cog wheel top right) / Account Setup / Integration / Private Apps
#1 Create a new App:
#2 Click on Scopes to set the specific rights given to the application:
#3 Click [ Create App ] and [ Continue Creating ]
#4 Click "Show Token" and make a copy of it. (pat-eu1-xxxx)
#5 In Jointflows, go into settings/Advanced Tab save the token in the Text box of hubspot_key_secret
#6 Toggle the crm_integrated setting to True ( box ticked)