links on my page perform very bad

Hello everybody,
I'm new here and I wish to find some help to solve this problem I'm facing right now
we build our community in facebook slowly and we have 2 pages every page have 1.4 million on it. everything went well because we're posting engaging content and our community loves what we're doing. since monday the second of October everything went wrong the links perform like shit and we tried to find a solution and contacted facebook support but we had nothing. I found some other pages…

links on my page perform very bad