If you showed us a screenshot of the notice, someone may be able to help.
Posters here are busybodies members like yourself, not eBay employees.
Do you mean you were not allowed to list ? Newbies are restricted in the number and value of the items they can list. This is both a Buyer and a Seller protection against fraud.
Since you can post, your account was not closed. Have you tried to buy anything? Pick a seller that leaves feedback on shipment.
