Can't realist my item on ebay?

I'm trying to relist my iPhone but I keep getting this

Based on the information you have provided, it looks like there's a corresponding product in our catalog for your item. Using the eBay catalog when there's a product that matches your item is required for this category, and will help buyers find your item. Please go back and "Find your product" under "Product details" to add this information to your listing before submitting it.

If you are sure you are listing in the right category but are still unable to find a matching product, please email DL-eBay-CatalogSubmission@ebay.com and request your product to be added to the eBay catalog. In your email please tell us in which country and category you are trying to list, the exact name of the missing product and other important information you might have, like its part number (MPN) or barcode (UPC).

To learn more about listing with product details please click here.

WILL THEY FIND OUT I CHEATED?

Okay, so there's an award thing on this game I play. We can only vote once on the computer (for people who we think should win). They said they check EVERY vote.So, I didn't really care when i read that. I voted for myself on TWO iphones. Will they find out its me? E.e By the way, yes i already voted on comp.

If I change my Apple ID will it sign out of all devices?

Facebook has this feature where if I change my password, it gives me an option to sign out of all connected devices. Is this similar when it comes to Apple ID that it signs me automatically out of all devices like iPad, iPhones, iPod Touch?

Added (1). What if I'm changing the password through Apple's website?

Can't activate this used iphone

Ok I purchased an iphone off of ebay and I keep getting a message saying this phone is current linked to an apple id sign in with the apple id used to activate this phone. The buyer told me the esn was clean it wasn't stolen so I don't understand why I can't activate it or even put in my own apple account. Anyone know what I can do I tried contacting the seller but I don't feel like waiting

Should i buy a used iphone 3gs?

I have been on eBay looking to buy a used but fairly good iPhone 3gs but is it worth it as a back phone. I'm not looking to spend over a specific amount. I'm just gonna use it as an iPod and also if my phone dies. I may use it primary sometimes. I have always wanted an iPhone that I can use with my regular sized sim card.

Anyone that knows about cars?

I own a 4 door, 2006 Honda Civic. The car doesn't have the connection for an auxilary cord & I want to listen to music from my phone. Is there anything I can buy to be able to listen to my music? I don't have an iphone, I have an LG smartphone though. Also, if you could list the price average of whatever it is I need to buy. Please & thank you!

What emoji do I get, very confused?

I have an iPhone 4S and I've seen people putting these crazy icons and emoticons, I've tried to find that what's the name of the app that adds the emojis to my text/iMessage keyboard?