Your previous account and submission both didn't indicate that you were the one who posted the same on coderwall, so it was assumed to be plagiarized from there. If it's okay for you to stick with this new account I think no further action is neccessary.
If the brain were so simple we could understand it, we would be so simple we couldn't. — Lyall Watson
What happened is that the reviewers work to their timescales, not yours. As you aren't paying people to review these submissions for you, you are just going to have to accept that the people who freely volunteer their time just might not have had a chance to get around to it. Patience isn't just a virtue, it's your only option.
Moderation is performed by members. So approval depends on how many members have a look at the queue and finally give their OK. Many articles are uploaded during the weekend when only a few members are online. This usually leeds to more articles in the queue on Monday than on other working days.
There is nothing you can do besides being patient.
There should be settings for your feed, depending on what you're using for your RSS feed. Feedburner? If you're on wordpress, for example, and using a specific theme, the theme / wordpress admin panel would have feed options in there.