As a new seller and especially if a different country was used to make an account here in the UK, this could have caused some delay in verifying your account.
There is a longer delay on all new accounts for security reasons, for releasing a payout sooner.
Contact eBay Customer Services as I do believe trying to open a UK account in another country may cause longer delays in the verification process.
This is the easiest and quickest way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open 8 a.m. - 10 p.m. on weekdays
9 a.m. - 6 p.m. on weekends.
Automated agents will be available on chat outside of the above hours.
I recommend contacting CS first thing in the morning as there's more chance of Dublin answering.
@dirkwerkers