And it won't let me delete posts anymore.
Posts can only be edited and deleted after a certain amount of time after you post. Like I said a moderator will need to help you, would you like me to report this thread to them? They might see you need help, reporting doesn't mean you'll get in trouble, it just means that they will see you have a problem and maybe move this thread as well. You can inquire about your username having personal information, I don't know how the site is setup but they might be able to change it. However, normally once a post has been made and a user created, there is little you can do to delete or change them. Normally moderators just ban your account and have you open a new one. Still talk to them, they are reasonable people and I sure you can come to an agreement with them.
EDIT - I see your post in the other forums, just wait a bit and they'll help you.