We have no access to your account have you had any previous restriction? Be aware if you have had a permanent or indefinite restriction that' s a complete ban, you will not be able to sell on eBay.
This account looks OK I cannot see any ' unregistered user' are you have issues listing?
Contact Customer Services you may just need to confirm and verify you are the owner coming back to sell.
Contact eBay Customer Services it's not easy nowadays to get a live agent , but some have had success using the app, otherwise keep typing in ' I wish to speak to an agent' and this too can work.
Use this link to contact CS, if you can try at 8 a.m. on a weekday morning also more chance there for Dublin to answer.
https://www.ebay.co.uk/help/eua?id=5190
Lines open between 8 a.m. to10 p.m. on weekdays.
9 a.m. to 6 p.m. on weekends.
@awanwhole
