Looking for someone to exchange OR for a good advice

I had two jerseys. One was created by me when I joined the game for the first time. I bought the second, a nice green&black striped jersey. Then I said "Would be gr8 to have another jersey in similar colours" So I bought a second one, which is black&green instead of green&black. But now I can't choose both at once! Whatever I do, the ****ty original jersey stays on 'home' or 'away'. I can't use both the two new. I can't somehow delete , send or sell the original created jersey, why??
If someone finds the solution, please tell me. If not, I have a nice jersey available for gift or exchange will add a photo if someone is interested