Hi =)  I think you can see from being flagged here, that simply tacking on an ad for your cause to your comment is considered spam.

I suggest, and hope you can take this as a positive criticism, that when you comment and wish to gain support for your cause on a post, you relate your cause to the post more clearly.  

For instance, this post was a discussion of Trump, and economics figured into the discussion.

Poor children, in faraway places from most readers of the comments, can be connected to such a discussion substantively.  By not doing that, you simply connect your relevant comment to an advertisement without making that connection to the post.  Many would consider that, what you have done here, spam.

I hope that helps you to succeed in helping folks.

BTW, I have asked for more information regarding your charitable work, which I have not yet seen.  I assure you that would certainly increase your chances of gaining support.

Be well!