First check your details are correctly registered here:
https://ppcapp.ebay.co.uk/myppc/wallet/list
If all correct, contact eBay Customer Services they have access to your account and can explain what and why verification is needed now on an established bank account.
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.
@cowl-49