I am just seeing this but we have all made mistakes we aren't perfect. I am glad you are apologizing and trying to make things right. That is what really matter. The past is the past and time heals all wounds. Don't let a few negative things ruin friendships. I honestly don't even remember what you did.
As a family here we are bound to get in fights and make mistakes. It is important for both parties involved to try to work things out or you could end up losing a friend forever over something stupid. I sometimes wish some of my old friends would finally come around and apologize like you are. Realize they made a mistake and are willing to try to fix things but some just aren't like that. It is sad because some of them are drowning in their own anger and unhappiness that years from now they will look back and regret it. Pushing friends away over petty arguments and holding grudges.
Anyways welcome back and I hope things work out for you. SmG is a good place and you'll never be alone or should never feel alone if you are a part of this family.