What kind of restriction is it? If it states it's a permanent or indefinite restriction then there's no comeback from that.
Your profile is not very good with low star ratings and 5 negatives showing items were not posted / received.
This may well be an indefinite restriction.
Contact eBay Customer Services they do not go deeply into any discussion about restrictions but can pehaps tell you if you can sell again.
To Contact Customer Services, I find the quickest way to contact them, either for a Live Chat, or you can select to speak and request a Call Back, to click on this link:
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
On weekdays lines open between 8 a.m. and 10 p.m.
On weekends they open between 9 a.m. and 6 p.m.
