Okay, so I solved this issue by doing the opposite from what’s recommended:
1. Log OUT of LinkedIn
2. In HubSpot, remove the LI Sales Navigator app integration
3. Re-add the integration
4. Go to any contact, and find the Sales Navigator area that is supposed to show the contact. You will still have the same error text.
5. Change Account, or Log into LinkedIn, whichever link is there.
The difference is, it will now have you log into LinkedIn.
managed to log in, and completed the integration.