I sympathise with you OP but eBay has been known to hide the listings of new accounts for longer periods than they might otherwise. 

It has happened to me on a new account once and my listings were hidden for around the first 24 hours of the listing.  

When I followed up the reason that eBay gave me was that the listings on a new flagged account undergo more vigourous Trust and Safety bot scrunity. 

Given your account's "identity" problem that you recently posted about OP it is highly likely your account is still under this additional scrunity IMO.