Hello @NadineB47 ,
Regarding your issues with Social Share, can you provide any additional details, such as error message warning? Additionally, does disconnecting your page from us, removing our app from your page's permissions, and then re-connecting us alleviate your issue at all? Does the same issue occur when making a post through the Social tab in the top navigation bar?
As far as posting to personal pages, Facebook's API explicitly doesn't allow personal pages to be connected in such a way, only business pages. Same with Instagram for Social tab posts.