You are asking on the UK site, where rules for where you are located, may be different for a restricted account,.
You need to long out of here, and log in to www.ebay.com and ask Customer Services there, you can contact them here:
Contact eBay Customer Services this way, through their help pages.
https://www.ebay.com/help/home
Lines are open between 5 a.m. and 9 p.m. Pacific Time
@ifilipovic