This user's access token has expired. Please have them re-authenticate

Dear Mel and Alex,
if I won't give up with yout tool, we will become friends

I tried to connect with LinkedIn this time, and I did everything as was in the documentation, but still my user is not authorized.

I created LinkedIn app, then I logged on my page with linkedin credentials and then with joomla to connect the accounts, then the permision was granted, then user appeard in the user map but the FB App Authorized status was "-". Then I logged off in the front end and logged back in with Linkedin and nothing happned. My linkedin app is still not authorized, and when I go the "channels" and add new one, and choose the user I get message: This user's access token has expired. Please have them re-authenticate on the front-end of the site..

Do you have any other ideas, suggestions?\
I was trying eveything for past hour and nothing worked.
Best,
Kalixo

Dear Alex,
I did that.
I deleted my user linked with my account in linkedin in user map. I logged off at the front end. I logged off linked in too.
I logged on with linkedin button at my frontend. Linkedin asked for a permisions (but only my personal data on linkedin account (basic account info + e-mail) - I put the logindata and allowed permisions. My webpage said "thank you for loggin with linkedin..", and I logged in with my joomla credentials to connect my accounts. I get infomration: "integration with linkedin profile was successfull". At backend I can see user linked with linked in, but I see "-" below columns Sent Requests, Received Requests, FB App Authorized.
When I go to Channles and try to add the channel, I choose provider: linkedn in and type: compnay. I choose my user and I see "
This user's access token has expired. Please have them re-authenticate on the front-end of the site."

After turning logging I get the message:
LinkedIn API Error: Error code 403 received requesting data: { "errorCode": 0, "message": "Member does not have permission to get companies as admin.", "requestId": "2XD0ZZA96K", "status": 403, "timestamp": 1534347779771 }.
Any ideas?
Best,
Kalixo

Dear Alex,
thank you for your help and instructions.

" So, after you setup the Channel, JFBConnect knows to request the additional permissions required to get and post to your Company feed the next time you login. " - it worked!

It seems that this instruction should be placed in the documentation, because if it was, I wouldn't ask for help.

In fact, when I saw that the Channel had problems I didn't save it and didn't try to get permissions.

Thank you once again,
best.
Kalixo