Did you then buy over the counter postage at your Post Office.
If you cannot manually change the tracking where you marked the item as dispatched, use a laptop / PC and use Chrome, if still not possible contact eBay Customer Services and they will change the tracking for you.
Once tracking shows delivery your payout will be released 2 days after that delivery date. Or, you'll need to wait 14 days for the payout to be released.
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.
@chazzy_65