You can only connect personal LinkedIn accounts that you own as well as pages your personal account OWNS to maintain security and proper functionality.
Account connection requirements
You can only connect LinkedIn accounts that meet these criteria:
Personal accounts only - You must be the owner of the LinkedIn account
Accounts you control - You cannot connect accounts belonging to other people (you must own the pages under your connected personal account)
Subpage functionality
For LinkedIn subpages to work correctly:
The main LinkedIn account must remain connected
The main account needs the correct permissions
Disconnecting the main account permissions from linked in will break subpage functionality, but you CAN disconnect it on post bridge after adding subpages.
What this means for you
If you're trying to connect additional LinkedIn accounts and can't, check that:
You own the LinkedIn account personally
Your main account is still connected
You have the required permissions on both accounts
This limitation ensures your LinkedIn integration works reliably and maintains security standards.