Of course Jersey is a dependency of the UK, but I do know that buyers from Jersey sometimes have difficulties paying for items purchased from UK sellers, this is because eBay have grouped the Channel Isles mainly Jersey and Guernsey into Europe. This may be affecting your ability to have your address accepted ?
I would suggest contacting eBay Customer Services, but only very first thing on a weekday, when the lines first open for ' live agents', as there's more chance of Dublin answering, and they'll have a better understanding of the issue here, than CS in the Philippines !
Only speak to Dublin, ask what the workaround to this is, how you can list your UK address! It's a Call Back option, so you'll hear if it's the dulcet tones of the Emerald Isles !
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.
As said I do recommend contacting CS first thing in the morning as there's more chance of Dublin answering.
Good luck I hope you get it sorted !
@oreve49