When I try to do an integration between SalesIQ and FB Messenger I have got a problem. I am loged-in in FB,  Then on Second step, when I have to choose Company's FB Page there is the page name but with red Attention sign - see attached picture. I can't choose it. If i click on Add page,  the new Login page for FB appears, I am entering my password, and everything starts again from first step - I am choosing my Facebook account, and then again step 2, where i can't choose the company's FB page.

What can cause the problem? My Zoho Social is connected to the same FB page and there is no problems?