There's nothing special in your account even though it's a copper. There are lot of copper members here, some are legendary, hero and Sr. Member but still they are getting rejected sometimes as they are just the same with regular members.
If you only knew, the copper membership only makes you post images and etc. that a regular newbie cannot do. Nothing so special at all.
Also, no newbie is allowed to join any signature campaign. You will be so lucky if ever you find one and who do you think you are to join campaign with a newbie rank? Except if you're a extraordinary poster like nullius who can make posts that will surpass the quality of higher members.
My suggestions is, if you want to join campaigns then make quality posts and make good contributions in the forum so that you'll be able to rank up. When you reach Member rank, I'm sure that you can participate in some campaigns. But if you went in the wrong path which is "spamming", you will end up banned although you're a copper. Membership of account will not save you from any consequences of violating rules.
are there any active campaigns taking copper?
Copper membership is not the basis or requirement to join in any campaign. It is based on the rank and quality posts of the account.
You can find campaigns that accepts coppers but accepts regular members as well.
Ok, thank you sir!
I will start trying to make quality posts.
Good, then I will be looking forward for that. And please don't call me Sir, just a buddy or mate will be fine