If you mean that eBay has cancelled your listings on the basis that you were selling counterfeits, DON'T try to relist them.
That could lead to suspension of your selling account.
What makes you think your items are NOT counterfeit?
Are you dropshipping? Many dropshipped items are either blatant counterfeits, or off-brand simulacra, or 'seconds', or use false keywords to decieve the buyer. (And sometimes the reseller.)
Are the items being shipped from Asia? One side effect of the huge industrial base in China and the lack of any consistent Rule of Law, is that scammers can produce those fakes for the Western market, knowing that there is no effective justice system.
Does the item use copyrighted products? Selling some designer purses, for example, even when legally obtained and authentic, can have the listing shut down under eBay's VERO program which protects manufacturers and designers. Also Disney.
As a new eBayer, I would advise you to do some buying before venturing into selling.
Buyers can get only positive feedback, which is a measure of trust.
You will get a better picture of how the buying experience works, which will make you a better seller.
And you will run into some of the pitfalls you can avoid when you do start selling.
