Allows multiple pages per account?

Hello, I have two Facebook accounts with 3 pages in one and 2 pages in another. By buying your product, will I be able to post in all pages automatically?

Also, will it allow me to posts in multiple groups as well?

Last question, do you need to create an APP ID and SECRET? I tried using another extension and it needed special permissions for posting and managing pages, which facebook does not give. What is the sync process like? Can you promise no problems in this front?. I know Facebook made an update a while back and that made issues with the permissions.

Thank you for your answer